$136.00
$169.00 save $33.00 -- applied automatically through this link
When you buy through our links, we earn a small commission -- and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
What it is
A daily softgel blend that brings together marine omega-3s (EPA and DHA), vitamins D3 and K2, and a wide spectrum of plant antioxidants and carotenoids -- among them quercetin, resveratrol, alpha-lipoic acid, CoQ10, lutein, lycopene, and astaxanthin. Taken as four softgels a day, it is built to feed the body's own antioxidant network and everyday renewal pathways across many tissues at once.
Why the evidence supports it
The honest frame for Youth is youthful gene expression -- think of it as genetic fasting. Here is why that is credible, not marketing: eating dramatically less (caloric restriction) is the one intervention science has robustly shown, across species, to shift gene expression toward a younger pattern and actually add years to life; LifeGen -- Weindruch and Prolla's work, independently replicated and later acquired by Nu Skin -- mapped exactly that gene signature. Youth is built to give your genes that same youthful signal without the hunger: its rare mix of omega-3s, resveratrol, quercetin, alpha-lipoic acid, CoQ10, and carotenoids was selected to nudge those same genes, not to chase one antioxidant target. That is why its research reads system-wide rather than single-system -- measured support across skin (it is scanner-certified to raise your carotenoid score), brain and cognitive function, everyday metabolism, and even omega-3 index at once, from a blend most diets can't assemble. The honest ladder: the caloric-restriction gene-expression science underneath it is robust and independently replicated; that this finished formula reproduces that shift in you is a real but still-emerging claim. So it supports the cell's Maintain and renewal function broadly, toward a more youthful gene-expression pattern -- it does not reset genes or reverse aging.
What it supports
- Supports the body's own antioxidant defenses
- Supports the body's natural renewal and vitality pathways
- Supports a healthy inflammation response already within normal range
- Provides omega-3s and carotenoids that diets often lack
Which function it supports
Ties to the cell's Maintain function -- nudging gene expression toward a more youthful pattern (LifeGen's approach, benchmarked on caloric restriction, the one proven lifespan-extending way to shift it) across skin, brain, and metabolism at once. It supports the body's own renewal pathways; it does not reset genes or reverse aging.
Learn the why behind this pillarHow it relates to your cells and mind
Every product here ties back to a specific job your body does. This one touches the functions below -- follow either link to see the mechanism in full, then dig into the studies.
What it is made of -- and the mechanisms behind it
Each ingredient acts on several of the body's functions. Taken together, this product touches these cell and mind functions -- follow any to see the mechanism in full.
The ingredients
Mechanisms drawn from our ingredient knowledge base (14 profiled ingredients). Structure and function only -- not a treatment claim.
The science on the ingredients
These studies are research on the ingredients and mechanisms in this product, not on the finished product itself, and they are shown for education. Nothing here is medical advice, and nothing here may be used to diagnose, treat, cure, or prevent any disease. Talk to your own provider about what is right for you.
- Protective effects of a novel nutritional and phytonutrient blend on ultraviolet radiation-induced skin damage and inflammatory response through aging defense mechanisms
J Cosmet Dermatol · 2017
- Calcium vitamin D or combined supplementation to prevent fractures and falls
BMJ · 2026
No broad favorable fracture or fall effect -- Little to no effect on most fracture and fall outcomes
- DHA Alone, EPA + DHA, EPA + DHA + GLA, and EPA + DHA with or Without Vitamin D During Chemotherapy in Women with Breast Cancer: An Intervention- and Outcome-Stratified Systematic Review
Nutrients · 2026
In review, omega-3 supplementation formulations (DHA alone, EPA+DHA combinations, with or without vitamin D) during breast cancer chemotherapy showed variable intervention outcomes.
- Association of vitamin D receptor genetic variants with therapeutic response in multidrug-resistant pulmonary tuberculosis: a systematic review
2026
This systematic review of 213 studies on multidrug-resistant tuberculosis found low serum vitamin D and certain vitamin D receptor variants, especially FokI and TaqI, consistently linked to higher TB risk and altered immune response.
- Vitamin D levels, general health status, and work productivity among healthcare workers-a scoping review of published literature (2010-2025)
2026
A scoping review of 36 studies found vitamin D deficiency common among healthcare workers and linked to immune vulnerability and musculoskeletal problems, with mixed evidence for mental health effects.
- Maternal vitamin B12, vitamin D, and folic acid status during pregnancy and child neurodevelopment: a systematic review
2026
This systematic review of 22 studies found adequate maternal vitamin B12 status was linked to better infant language and memory, vitamin D deficiency to poorer motor outcomes, and early folic acid use to improved cognitive development.
Calcium vitamin D or combined supplementation to prevent fractures and fallsEstablishedMeta-analysis2026
No broad favorable fracture or fall effect -- Little to no effect on most fracture and fall outcomes
Not captured in abstract review -- BMJ
DHA Alone, EPA + DHA, EPA + DHA + GLA, and EPA + DHA with or Without Vitamin D During Chemotherapy in Women with Breast Cancer: An Intervention- and Outcome-Stratified Systematic ReviewEmergingSystematic review2026
In review, omega-3 supplementation formulations (DHA alone, EPA+DHA combinations, with or without vitamin D) during breast cancer chemotherapy showed variable intervention outcomes.
Kinga Fronk; Mariusz Wysokiński; Rafał Podgórski; Edyta Łuszczki -- Nutrients
Effects of sodium bicarbonate, cholecalciferol, and protein supplementation interventions on muscle mass and metabolic disturbances in patients with chronic kidney disease: a systematic review and network meta-analysisEstablishedSystematic review2026
Across 22 studies with 2879 patients, 11 on sodium bicarbonate, 5 on cholecalciferol and 6 on protein supplementation, sodium bicarbonate appeared more effective at improving bicarbonate levels.
Shuilian Leng; Meijun Wu; Jingchun Yao; Xiaojuan Jiang
Efficacy and safety of vitamin D supplementation in diabetic kidney disease: an umbrella review of systematic reviews and meta-analysesEstablishedSystematic review2026
Across 11 reviews of vitamin D in diabetic kidney disease, nine drew on randomized data and GRADE certainty was low for the surrogate urinary albumin outcomes.
Víctor Juan Vera-Ponce; Jhosmer Ballena-Caicedo
Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.Randomized controlled trial2026
In this open-label trial, patients with post-COVID or post-vaccination ME/CFS given vitamin D plus diet, sun exposure, and exercise guidance showed greater symptom improvement than those given vitamin D alone, though lack of blinding limits certainty.
Kodama S; Nakata M; Konishi N; Yoshino M; Fujisawa A; Naganuma M; Kobayashi Y; Hirai Y; Kitagawa A; Miyokawa M; Mishima R; Teramukai S; Fukushima M -- Nutrients
Harnessing Sunlight Safely for Newborn Care: Balancing Risks and Benefits in Resource-Limited Settings.Clinical trial2026
Review discusses balancing controlled early-morning sunlight exposure, traditionally used to help prevent vitamin D deficiency and manage neonatal jaundice, against UV radiation risks for newborns in resource-limited settings.
Olusanya BO; Boo NY -- Tropical medicine & international health : TM & IH
Targeting Glyoxalase-1 Pathway with Natural Compounds: A Translational Strategy to Reduce Dicarbonyl Stress and Prevent Chronic DiseasesEmergingExpert review2026
In a review, compounds including sulforaphane, resveratrol, alpha-lipoic acid, selenium, vitamin D3 and N-acetylcysteine were linked to increased Glyoxalase-1 activity, which helps clear the reactive byproduct methylglyoxal implicated in glycation-related disease.
Masood Alam Khan; Hina Younus
Association Between Vitamin D Deficiency and Cardiovascular Disease Risk Factors in the MENA Population: A Systematic Review and Meta-AnalysisEmergingExpert review2026
: Seventeen studies from nine MENA countries were included, predominantly cross-sectional, involving community-based and disease-specific cohorts.
Shahd Bucheeri; Abdulla Mubarak; Jarrah Aldoseri; Ayah Redha; Nitya Kumar; Sara Mohamed
Neurobiological mechanisms linking vitamin d signaling to cognitive decline and neurodegeneration: Untangling epidemiology, pathophysiology, and evidenceEmergingExpert review2026
This review synthesizes evidence linking low blood vitamin D to poorer cognition and higher dementia risk, but notes large randomized trials in generally healthy older adults found no benefit, with possible gains only in deficient or impaired subgroups.
Neha Choudhary; Maheen Zahid; Muhammad Ahmad; Muneeba Shaukat; Muhammad Tariq; Soura Rajeshwara; Shermeen Usman; Taimoor Wajid; Ayoola Awosika
Vitamin D Supplementation and Serum 25-Hydroxyvitamin D Response in Infants and Children: A Narrative ReviewEmergingExpert review2026
Across seven studies of roughly 3,800 infants and children, vitamin D doses from 400 IU daily to 14,000 IU weekly raised serum 25-hydroxyvitamin D by about 22 nmol/L, from around 53 to 75 nmol/L.
Simon Vieth
Effects of Vitamin D on Epigenetics, Seasonality, and Management of Rheumatoid ArthritisEmergingExpert review2026
A narrative review found that lower blood vitamin D and seasonal variation were associated with greater rheumatoid arthritis disease activity, with epigenetic changes like DNA methylation proposed as a mechanism.
Orlando Izzo; Emanuele Gotelli; Elvis Hysa; Rosanna Campitiello; Sabrina Paolino; Carmen Pizzorni; Stefano Soldano; Alberto Sulli; Vanessa Smith; Maurizio Cutolo
Intersections of vitamin D deficiency, HIV and chronic liver diseasesEmergingExpert review2026
</h4>People with HIV face a high burden for chronic liver diseases due to MASLD, viral hepatitis coinfections, and hepatotoxic exposures such as alcohol and ART.
Francesca Farina; Aurgho Datta; Suzanne N Morin; Sahar Saeed; Bertrand Lebouche; Giovanni Guaraldi; Salvatore Petta; Giada Sebastiani
Vitamin D and Omega-3 Supplementation for Emotional and Behavioral Dysregulation in Autism Spectrum Disorders: A Systematic ReviewEmergingExpert review2026
A systematic review of 3 small studies found combined vitamin D and omega-3 supplementation was associated with improved irritability, hyperactivity, agitation and self-injurious behavior in people with autism spectrum disorder, though evidence remained limited.
Marta Berni; Giulia Mutti; Raffaella Tancredi; Filippo Muratori; Sara Calderoni
Micronutrients as Mitigators of Endocrine Disrupting Chemical Health Effects: A Scoping Review and Framework for Epidemiologic StudiesEmergingExpert review2026
Adequate iodine, folic acid, vitamin D and antioxidant levels appeared to lessen some adverse health associations of endocrine-disrupting chemical exposure, mostly during pregnancy, according to this scoping review of 71 epidemiologic studies.
Heather M Guetterman; Jessie P Buckley; Kasandra Sanidad; Emily Jamo; Rita S Strakovsky
Prenatal Aflatoxin B<sub>1</sub> Exposure: A Review of Pathogenesis and Impact on Fetal Skeletal Development and OssificationEmergingExpert review2026
A review linked prenatal aflatoxin B1 exposure to reduced human birth weight and, in animal studies, to skeletal malformations and impaired bone formation, proposing disrupted vitamin D and calcium handling as a likely mechanism.
Giovana Perez Montenegro; João Victor Batista da Silva; Sher Ali; Sana Ullah; Lucas Gabriel Dionisio Freire; Carlos Augusto Fernandes de Oliveira; Leandra Náira Zambelli Ramalho
Integrative Vitamin D-Inflammatory-Coagulation Biomarker Index Predicts COVID-19 Severity: Development and Validation of the Vitamin D Inflammatory Burden Score (VDIBS)EmergingTechnology-validation study2026
In 301 hospitalized COVID-19 patients, a composite score combining vitamin D status with inflammation and coagulation markers predicted severe disease with strong accuracy, and vitamin D deficiency alone added significant predictive value beyond the other biomarkers.
Joško Osredkar; Uroš Godnov; Darko Siuka
The effect of vitamin D supplementation on periodontal health: a systematic review and meta-analysisEmergingPrimary research (design unspecified)2026
Pooling three trials, vitamin D added to non-surgical gum treatment made no significant difference to probing pocket depth, a mean difference of 0.0023 mm, and no included study examined peri-implant outcomes at all.
Aafreen Gillani Haji; Benedetta Ghezzi; Sara Tagliaferri; Nagihan Bostanci; Elena Calciolari
Messages for ultraviolet-radiation protection to fair-skinned populations.2026
A public health project developed evidence-based educational messaging on ultraviolet radiation protection aimed at reducing skin cancer risk in fair-skinned populations, given continued increases in melanoma incidence.
Brochez L; Garbe C; Amaral T; Arenberger P; Astratinei V; Autier P; Berwick M; Bylaite M; Boonen B; Del Marmol V; Dreno B; Fargnoli MC; Green AC; Greinert R; Hauschild A; Harwood CA; Hoorens I; Kandolf L; Kaufmann R; Kelleners-Smeets N; Lallas A; Lebbé C; Leiter U; Lim HW; Longo C; Malvehy J; Moreno D; Östman F; Pellacani G; Peris K; Robert C; Ryll B; Saiag P; Schadendorf D; Soyer P; Spurrier-Bernard G; Stockfleth E; Stratigos A; Uhara H; Vieira R; Weinstock MA; Whitaker D; Whiteman DC; Zalaudek I; Forsea AM; EADO Task Force for Prevention and Early Detection of Skin Cancer -- Journal of the European Academy of Dermatology and Venereology : JEADV
Iron Repletion Does Not Increase Serum 25-Hydroxyvitamin D₃ in Young Women with Iron-Deficiency Anemia and Coexisting Vitamin D Deficiency: A Prospective StudyEmerging2026
In 54 young women with iron-deficiency anemia and vitamin D deficiency, restoring iron stores improved hemoglobin and iron status but did not raise serum vitamin D levels, in a prospective study.
Hüseyin Yağcı; Gül Gürsoy
Vitamin D and Fracture Healing.2026
A review found that vitamin D supports calcium and phosphate absorption for bone health and fracture healing by regulating immune response, inflammation, and mineralization, with deficiency linked to osteoporosis, osteomalacia, and rickets.
Zaman MS; Ullah MI -- Advances in experimental medicine and biology
Usual nutrient intake and adherence to dietary reference values among 3-6-year-old Finnish preschoolersEmergingPrimary research (design unspecified)2026
A cross-sectional survey of 808 Finnish preschoolers found 61-76% had usual vitamin E intake below the estimated average requirement, alongside shortfalls in vitamin D and iron and excess saturated fat and sodium.
Henna Peltonen; Maijaliisa Erkkola; Henna Vepsäläinen; Satu Kinnunen; Essi Skaffari; Kaija Nissinen; Eva Roos; Riitta Freese; Reetta Lehto; Jaakko Nevalainen; Liisa Korkalo
Consensus statement on vitamin D role in metabolic health.2026
A consensus statement from vitamin D experts found that low vitamin D levels are linked to increased cardiovascular disease and diabetes risk, with supplementation shown to improve glycemia and reduce progression to diabetes in some studies.
Giustina A; di Filippo L; Aleksova A; Bollerslev J; Colao AM; Dawson-Hughes B; Donini LM; Ebeling PR; Lazaretti-Castro M; Lorusso R; Luzi L; Marcocci C; Minisola S; Napoli N; Pittas AG; Rizzoli R; Rovere Querini P; Santini F; Schafer AL; Virtanen JK; Bilezikian JP -- Metabolism: clinical and experimental
The Nutritional Paradox of Obesity: Mechanisms and Clinical Implications of Micronutrient DeficienciesEmerging2026
This narrative review reports that individuals with obesity most frequently show deficiencies in iron, zinc, magnesium, calcium, vitamin D, B12, and folate, though evidence that correcting these deficiencies improves clinical outcomes remains inconsistent.
Alexa RE; Haliga RE; Morărașu BC; Ceasovschih A; Sîrbu O; Asaftei A; Șorodoc V; Șorodoc L
25-Hydroxyvitamin D3 metabolism modulates the effect of variable UV exposure on 25-hydroxyvitamin D3 plasma concentrations.2026
In 217 healthy men aged 30 to 50 not taking vitamin D supplements, 25-hydroxyvitamin D3 levels were shaped more by synthesis and degradation kinetics than directly by UV exposure, producing similar summer peaks across European sites despite differing sunlight.
Scholze A; Shinkov A; Slavov GS; Luman M; Vallianou N; Petrauskiene V; Stubnova V; Wilson T; Shen J; Geladari E; Trigkidis K; Assing K; Bumblyte IA; Gunga HC; Kambezidis HD; Rasmussen LM; Tepel M; Hirche F; Steinach M; Stangl GI; Feister U; Tan Q -- Communications medicine
Balanced by design -- we show supporting and contradicting findings. Search all studies
If you have had labs done
These are lab markers where this product's ingredients have measured evidence in our citation library. This is not a claim that the product will change your results -- the research attaches to the ingredient, and what a marker means depends on the whole picture. Each one links to its full entry, including what typically moves it and how to read it.
via Vitamin D · 795 studies, 345 in people
What people often notice when this marker sits outside the usual range
Higher: ⚠️ Toxicity risk is hypercalcaemia and kidney stones.
Lower: The general deficiency picture -- fatigue, aching bones and muscles, low mood worse in winter, frequent illness, hair loss, slow healing.
- Omega-3/Omega-6 Fatty Acid Panel (EPA, DHA, DPA, Arachidonic Acid, Linoleic Acid, Ratios)solid evidence
via EPA (Omega-3) · 102 studies, 42 in people
The only thing that reliably raises the omega-3 index, because the index measures them.
What people often notice when this marker sits outside the usual range
Higher: Very high intakes: easier bruising, longer bleeding from small cuts, and a fishy aftertaste or reflux.
Lower: Dry, rough or bumpy skin on the backs of the arms; dry eyes; dry, brittle hair.
- Calciumsolid evidence
via Vitamin D · 56 studies, 22 in people
What people often notice when this marker sits outside the usual range
Higher: "Bones, stones, groans and psychic moans" -- the old teaching phrase, and still the best summary: bone pain, kidney stones, abdominal pain and constipation, low mood and confusion.
Lower: Tingling around the mouth and in the fingers and toes.
- Calciumsolid evidence
via Vitamin D · 56 studies, 22 in people
What people often notice when this marker sits outside the usual range
Higher: A high serum calcium needs clinical work-up -- causes include parathyroid, vitamin D and kidney issues -- not a supplement adjustment.
- Triglyceridessolid evidence
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Higher: High triglycerides are usually silent and travel with the insulin-resistant pattern -- central weight gain, energy crashes after carb-heavy meals, a low HDL.
Lower: Low triglycerides are generally not a concern and often reflect good metabolic health.
- Triglyceridessolid evidence
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Higher: A non-fasting draw or recent alcohol inflates the number -- confirm a true fasting sample before acting on a borderline value.
Lower: Low triglycerides are generally not a concern and often reflect good metabolic health and insulin sensitivity.
- Triglyceride : HDL Ratio (calculated -- a derived value)solid evidence
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Lower: A low ratio suggests good insulin sensitivity -- the favourable direction.
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Higher: The TyG index is a calculated insulin-resistance marker built from fasting triglycerides and fasting glucose -- a derived number, not a felt symptom.
Lower: A lower TyG index (within a population) is the favourable direction -- the validating studies read it as higher-versus-lower, not against a fixed line.
- Magnesiumsolid evidence
via Vitamin D · 41 studies, 14 in people
What people often notice when this marker sits outside the usual range
Higher: Almost always caused by supplements plus reduced kidney function, not by food.
Lower: Muscle cramps, especially calves at night; eyelid twitching that goes on for days.
- Estradiol, FSH, LH, Prolactin, DHEA-S & Testosteronesolid evidence
via Vitamin D · 28 studies, 14 in people
What people often notice when this marker sits outside the usual range
Higher: HIGH FSH with low oestradiol is the menopause transition signal.
Lower: Joint aches that appeared with no injury; skin and hair changing texture.
- Estradiol (E2)solid evidence
via Vitamin D · 28 studies, 14 in people
What people often notice when this marker sits outside the usual range
Higher: Breast tenderness, heavy or painful periods, fluid retention, worsening premenstrual mood, headaches around the period.
Lower: Vaginal dryness, painful sex, poor sleep, low mood, hot flushes, brain fog and word-finding difficulty.
- High-Sensitivity C-Reactive Protein (hs-CRP)solid evidence
via Vitamin D · 9 studies, 8 in people
What people often notice when this marker sits outside the usual range
Higher: Deep, unrefreshing fatigue -- searched as 'tired all the time blood tests normal' and 'why am i tired even after 8 hours sleep'.
Lower: No symptoms. Low is the desirable direction.
- High-Sensitivity C-Reactive Protein (hs-CRP)solid evidence
via Vitamin D · 9 studies, 8 in people
What people often notice when this marker sits outside the usual range
Higher: Poor recovery from ordinary exertion; getting ill more easily.
Lower: Low is the desired direction.
- High-Sensitivity C-Reactive Protein (hs-CRP)solid evidence
via Vitamin D · 9 studies, 8 in people
What people often notice when this marker sits outside the usual range
Higher: Deep unrefreshing fatigue, migrating aching, brain fog, low mood with no situational cause, poor recovery -- all of which overlap the perimenopause symptom list almost exactly.
Lower: Low is the desired direction.
- Vitamin D (25-Hydroxyvitamin D)solid evidence
via Vitamin D · 20 studies, 7 in people
What people often notice when this marker sits outside the usual range
Higher: Excess comes from supplements, essentially never from sun.
Lower: Fatigue -- our library holds an explicit study of 25(OH)D and fatigue severity in adults.
- Vitamin Dsolid evidence
via Vitamin D · 20 studies, 7 in people
What people often notice when this marker sits outside the usual range
Higher: Excess risks hypercalcaemia and kidney stones -- read the main vitamin D entry.
- Vitamin D (Gut Barrier)solid evidence
via Vitamin D · 20 studies, 7 in people
What people often notice when this marker sits outside the usual range
Higher: See the main vitamin D entry -- excess risks hypercalcaemia and kidney stones.
Lower: Vitamin D deficiency is consistently associated with altered gut microbiota and increased permeability in observational data.
- Vitamin D (25-hydroxyvitamin D)solid evidence
via Vitamin D · 20 studies, 7 in people
What people often notice when this marker sits outside the usual range
Higher: Excess risks hypercalcaemia and kidney stones -- toxicity comes from supplements, essentially never from sun.
Lower: Fatigue, aching bones and muscles, low mood worse in winter, frequent illness, hair loss.
via Vitamin D · 9 studies, 5 in people
What people often notice when this marker sits outside the usual range
Higher: HIGH ALP: bone pain or liver/bile symptoms.
Lower: LOW ALBUMIN: swelling of ankles and feet, puffiness around the eyes, fatigue, poor wound healing, muscle loss.
- Antinuclear Antibodies (ANA) -- Titer and Patternemerging evidence
via Vitamin D · 795 studies, 345 in people
What people often notice when this marker sits outside the usual range
Higher: Joint pain and stiffness WORSE IN THE MORNING and easing with movement -- the opposite of mechanical wear.
Lower: Negative is expected and carries no symptoms.
- Anti-Cyclic Citrullinated Peptide (Anti-CCP / ACPA)emerging evidence
via Vitamin D · 795 studies, 345 in people
What people often notice when this marker sits outside the usual range
Higher: Symmetrical small-joint pain and swelling -- both hands, both wrists -- with morning stiffness lasting more than about an hour and easing with movement.
- Immunoglobulin E (IgE), Total and Allergen-Specificemerging evidence
via Vitamin D · 795 studies, 345 in people
Reasonable to correct a deficiency on its own merits.
What people often notice when this marker sits outside the usual range
Higher: Hay fever, allergic rhinitis, itchy watery eyes.
Lower: Normal, and a normal total IgE does not exclude allergy.
- Sperm Motility (Total & Progressive)emerging evidence
via DHA (Omega-3) · 355 studies, 205 in people
What people often notice when this marker sits outside the usual range
Lower: Silent. Found only on semen analysis.
- Omega-3 Fatty Acids (Gut/Microbiome)emerging evidence
via EPA (Omega-3) · 223 studies, 86 in people
What people often notice when this marker sits outside the usual range
Lower: An intervention entry. In the gut context the claim is that omega-3s support barrier function and shift the microbiome toward SCFA-producing genera.
- Magnesiumemerging evidence
via Vitamin D · 41 studies, 14 in people
What people often notice when this marker sits outside the usual range
Higher: Because muscle-meat and refined foods are low in magnesium, shortfall is common on modern diets.
Lower: A high serum magnesium is rare and almost always tied to impaired kidney function (weakness, low blood pressure) -- a medical finding, since magnesium is renally cleared.
- Magnesiumemerging evidence
via Vitamin D · 41 studies, 14 in people
What people often notice when this marker sits outside the usual range
Higher: A high serum magnesium is rare and almost always tied to impaired kidney function (weakness, low blood pressure) -- a medical finding, since magnesium is renally cleared.
- Prostate-Specific Antigen (PSA) Total, Free & Percent Freeemerging evidence
via Lycopene · 29 studies, 12 in people
What people often notice when this marker sits outside the usual range
Higher: Frequently NOTHING -- which is the entire reason PSA is measured rather than waited for.
Lower: No symptoms. ⚠️ Note that finasteride and dutasteride roughly HALVE PSA -- a result on either must be doubled to be interpreted, and forgetting this hides real findings.
- Prostate-Specific Antigen (PSA)emerging evidence
via Lycopene · 29 studies, 12 in people
What people often notice when this marker sits outside the usual range
Higher: Frequently NOTHING -- which is the entire reason PSA is measured rather than waited for.
Lower: ⚠️ Finasteride and dutasteride roughly HALVE PSA.
- ANA Screen, Titer & Pattern; Rheumatoid Factoremerging evidence
via Vitamin D · 43 studies, 9 in people
What people often notice when this marker sits outside the usual range
Higher: Joint pain and stiffness that is WORSE IN THE MORNING and eases with movement -- the opposite of mechanical wear, which worsens through the day.
Lower: A negative result is the expected one and carries no symptoms.
- Thyroglobulin Antibodies (TgAb)emerging evidence
via Vitamin D · 6 studies, 3 in people
What people often notice when this marker sits outside the usual range
Higher: Often NONE for years. Antibodies commonly precede any change in TSH or in how someone feels by a long time -- which is the argument for measuring them early rather than waiting.
Lower: Negative antibodies are the desired result and carry no symptoms.
- Thyroid Peroxidase Antibodies (TPOAb)emerging evidence
via Vitamin D · 6 studies, 3 in people
What people often notice when this marker sits outside the usual range
Higher: Often NONE for years -- antibodies commonly precede any change in TSH or in how someone feels by a long time.
Lower: Negative antibodies are the desired result.
- Thyroglobulin Antibodies (TgAb)emerging evidence
via Vitamin D · 6 studies, 3 in people
Meta-analyses show reduced antibody titres, especially in those starting out deficient.
What people often notice when this marker sits outside the usual range
Higher: Same picture as TPO antibodies -- frequently silent for years, then the hypothyroid symptoms appearing while TSH still reads normal.
Lower: Negative is the desired result.
- Thyroid Peroxidase (TPO) and Thyroglobulin (Tg) Antibodiesemerging evidence
via Vitamin D · 6 studies, 3 in people
Meta-analyses show reduced antibody titres, especially in those starting out deficient [EMERGING].
What people often notice when this marker sits outside the usual range
Higher: In an autoimmune panel these are here because THYROID AUTOIMMUNITY IS THE COMMONEST AUTOIMMUNE CONDITION THERE IS, and it clusters with everything else on this panel.
Lower: Negative is the desired result.
- eGFR, Creatinine & BUNemerging evidence
via Vitamin D · 7 studies, 2 in people
What people often notice when this marker sits outside the usual range
Higher: Later: swelling in ankles and around the eyes, foamy urine, fatigue, poor appetite, itching, night urination, high blood pressure.
Lower: A low creatinine usually reflects low muscle mass rather than excellent kidneys, and in older adults it can hide meaningfully reduced filtration.
- Leptinemerging evidence
via Vitamin D · 5 studies, 2 in people
What people often notice when this marker sits outside the usual range
Higher: Hunger that does not switch off after an adequate meal -- the signal is present but not being heard.
Lower: Persistent hunger, cold hands and feet, low mood and stalled menstrual cycles -- the low-energy-availability pattern seen in restrictive eating and in over-training.
- Thyroid-Stimulating Hormone (TSH)emerging evidence
via Vitamin D · 3 studies, 2 in people
What people often notice when this marker sits outside the usual range
Higher: Cold all the time, especially hands and feet, and needing more layers than everyone else in the room.
Lower: Racing or irregular heartbeat, palpitations, waking at night with the heart pounding.
- Anti-Mullerian Hormone (AMH)emerging evidence
via CoQ10 · 3 studies, 2 in people
Systematic review and meta-analysis of 6 RCTs in 1,529 patients with diminished ovarian reserve.
What people often notice when this marker sits outside the usual range
Lower: No symptoms at all in most cases -- AMH is a count of remaining follicles, not a hormone with felt effects, and cycles are usually still perfectly regular when it is low.
- HDL Cholesterolemerging evidence
via Astaxanthin · 2 studies, 2 in people
Supplementation measured on glycaemic control and lipid profile together in human trials.
What people often notice when this marker sits outside the usual range
Higher: Silent, and NOT automatically good news.
Lower: Silent. HDL produces no sensation at any level.
- Anti-Mullerian Hormone (AMH)emerging evidence
via CoQ10 · 2 studies, 2 in people
Systematic review and meta-analysis of 6 RCTs in 1,529 patients with diminished ovarian reserve.
What people often notice when this marker sits outside the usual range
Lower: No symptoms in most cases -- AMH counts remaining follicles, and cycles are usually still regular when it is low.
- Glucose (Fasting)emerging evidence
via Alpha-lipoic acid · 11 studies, 1 in people
What people often notice when this marker sits outside the usual range
Higher: Waking at 3am, often with a racing heart -- 'why do i wake up at 3am every night'.
Lower: Shakiness, sweating, sudden anxiety and difficulty concentrating that resolve within minutes of eating.
- HOMA-IR (calculated -- a derived value, not a measured one)emerging evidence
via Alpha-lipoic acid · 11 studies, 1 in people
What people often notice when this marker sits outside the usual range
Higher: Because it is built from fasting insulin, it carries that assay's variability -- interpret the trend on one lab, not an absolute number.
Lower: A low HOMA-IR (roughly under 2.0) is commonly read as insulin-sensitive -- the favourable direction, though the cutoff is population-dependent.
- Urinalysis (Appearance, pH, Specific Gravity, Protein, Glucose, Ketones, Blood & Microscopic Findings)emerging evidence
via Vitamin D · 4 studies, 1 in people
What people often notice when this marker sits outside the usual range
Higher: KETONES: fasting, low-carbohydrate eating, or illness.
- Bone Health: DEXA / T-score, CTX, P1NPmixed evidence
via Vitamin D · 795 studies, 345 in people
Required for intestinal calcium absorption.
What people often notice when this marker sits outside the usual range
Higher: A high T-score is favourable; very high values occasionally reflect degenerative change in the spine artificially inflating the reading.
Lower: Bone loss is SILENT until a fracture.
- Vitamin D, Calcium, and Parathyroid Hormone (PTH)mixed evidence
via Vitamin D · 795 studies, 345 in people
[SOLID for correcting a true deficiency, EMERGING/mixed for fracture prevention at low doses in already-replete women].
What people often notice when this marker sits outside the usual range
Lower: CALCIUM LOW: tingling around the mouth and in fingers, muscle cramps and twitching, irritability.
- LDL-C (LDL Cholesterol)mixed evidence
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Higher: A high LDL-C is an ESTIMATE that a lot of cholesterol cargo is riding in your LDL particles.
Lower: A low LDL-C is generally favourable, but on its own it is a start, not an answer -- pair it with ApoB to know the real particle burden.
- Non-HDL Cholesterolmixed evidence
via EPA (Omega-3) · 24 studies, 19 in people
What people often notice when this marker sits outside the usual range
Lower: A low non-HDL is favourable and, unlike calculated LDL-C, stays reliable even when triglycerides are high.
- hs-CRP (High-Sensitivity C-Reactive Protein)mixed evidence
via Vitamin D · 9 studies, 8 in people
What people often notice when this marker sits outside the usual range
Higher: A high hs-CRP reflects low-grade inflammation SOMEWHERE -- you tend to feel the underlying cause (a cold, a flare, a sore joint, poor sleep, extra weight) rather than the CRP itself.
Lower: A low hs-CRP is favourable and simply reflects little systemic inflammation at the moment of the draw.
- hs-CRP (High-Sensitivity C-Reactive Protein)mixed evidence
via Vitamin D · 9 studies, 8 in people
What people often notice when this marker sits outside the usual range
Higher: hs-CRP is non-specific -- read it as a trend and in context, never as a stand-alone verdict.
Lower: A low hs-CRP is favourable and simply reflects little systemic inflammation at the moment of the draw.
- Fasting Insulinmixed evidence
via Vitamin D · 13 studies, 6 in people
What people often notice when this marker sits outside the usual range
Higher: A high fasting insulin is one of the EARLIEST signals of insulin resistance -- insulin climbs to keep glucose normal for years before glucose itself rises.
Lower: A low fasting insulin, with a normal glucose, generally reflects good insulin sensitivity -- the favourable direction.
- Fasting Glucosemixed evidence
via Vitamin D · 13 studies, 6 in people
What people often notice when this marker sits outside the usual range
Higher: A high fasting glucose is often silent early -- the classic high-sugar symptoms (excess thirst, frequent urination, fatigue, blurred vision) tend to appear later and higher.
Lower: A genuinely low glucose (hypoglycaemia) can cause shakiness, sweating, irritability, hunger and lightheadedness -- but a low-normal fasting value in a healthy person is usually favourable.
- Fasting Insulinmixed evidence
via Vitamin D · 13 studies, 6 in people
What people often notice when this marker sits outside the usual range
Higher: Must be drawn fasting to be interpretable, and read alongside glucose (as HOMA-IR), never in isolation.
Lower: A low fasting insulin, with a normal glucose, generally reflects good insulin sensitivity -- the favourable direction.
- Fasting Glucosemixed evidence
via Vitamin D · 13 studies, 6 in people
What people often notice when this marker sits outside the usual range
Higher: A high fasting glucose is often silent early -- the classic high-sugar symptoms (excess thirst, frequent urination, fatigue, blurred vision) tend to appear later and higher.
Lower: A genuinely low glucose (hypoglycaemia) can cause shakiness, sweating, irritability, hunger and lightheadedness -- but a low-normal fasting value in a healthy person is usually favourable.
- Complement C3 and C4mixed evidence
via Vitamin D · 9 studies, 5 in people
What people often notice when this marker sits outside the usual range
Higher: C3 and C4 are acute-phase proteins and rise with ordinary inflammation and infection.
Lower: Persistently low complement with recurrent bacterial infections may instead indicate an inherited deficiency.
Lab results are interpreted by a qualified clinician who knows your history. Nothing here diagnoses anything or replaces that conversation.
No product works in isolation
Every cell function above -- Sense, Exchange, Transform, Build, Maintain, Adapt -- needs the same broad base of optimal micronutrient levels running underneath it, all the time. ageLOC Youth is not a stand-alone fix; it is one piece that plugs into that larger system. The foundation comes first, and this supports it.
Stacks well with
Pick your goal -- here is what ageLOC Youth pairs with for each. Nothing works in isolation; these share the same systems.
For Epigenetics
For Foundation Nutrition
For Energy & Mitochondria
For Eyes
Foundational, or targeted?
Not everything in the shop is meant to be taken forever. Some products here are foundational -- a daily nutrient base built for long-term, ongoing use. Others are targeted -- shorter-term support for a specific season, not a lifelong habit. If you are not sure which one this is, that is a fair question to ask us before you buy.
Learn more, on your terms
Do not take our word for it -- go read. Each topic below opens a pre-loaded search so you can explore the nutrient, the mechanism, or the device for yourself.
Search the full studies libraryHow to use it
Take four softgels daily with a meal that contains some fat, since many of the nutrients are fat-soluble. Splitting them across two meals is fine. Follow the label.
Where to get it
We are lining up the best way to get this one to you. In the meantime, reach out and we will point you the right way -- or browse the full shop to see every product.
See the full shopThe studies
See the research behind the science we point to.
Explore studiesThe blog
Plain-language reads on how it all fits together.
Read the blogOptimal nutrients are the definition of longevity
Long-term cell function depends on having what it needs, at the level it needs it, for as long as it needs it. That is the whole thesis behind everything we point you to here.
When you buy through our links, we earn a small commission -- and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.
ageLOC Youth is a broad daily softgel blend bringing together marine omega-3s, vitamin D and K2, and a wide range of plant antioxidants and pigments such as quercetin, resveratrol, CoQ10, lutein, and astaxanthin. It is built to support the body's own antioxidant defenses and renewal pathways. It fits people who want a genuinely broad antioxidant-and-omega base.
FAQ
What does ageLOC Youth support?
It supports the body's own antioxidant defenses, its natural renewal and vitality pathways, and a healthy inflammation response already within normal range, while providing omega-3s and plant pigments that diets often lack.
How do I take it?
Take four softgels daily with a meal that contains some fat, since many of the nutrients are fat-soluble. Splitting them across two meals is fine. Follow the label.
What makes it different?
It is a thoughtfully built, wide-ranging antioxidant-and-omega blend. The honest claim is simple and still worthwhile -- it supports the body's own renewal and antioxidant systems; it does not reset genes or reverse aging.