What does it mean that health starts at the cell?

It means we look one layer underneath the organ or the symptom. Every organ is made of cells, and those cells share the same basic jobs — sensing signals, exchanging nutrients and waste, making energy, building tissue, maintaining themselves, and adapting. When we support those jobs with the right raw materials, the whole system tends to work more smoothly. It is a lens for understanding the body, not a replacement for your doctor.

What are deficiency and toxicity?

They are the two most common ways a cell gets into trouble. Deficiency is when a cell runs short on a raw material it needs, like a mineral, vitamin, or healthy fat. Toxicity is when a cell carries a burden it struggles to clear, like heavy metals or chronic excess. Both are things you can learn about and work on, and often they show up together.

Is The Holistic Hub a substitute for medical care?

No. Everything here is education about how the body works at the cellular level, built to sit alongside your relationship with your own provider, not replace it. We are careful to keep our claims qualitative and grounded, and we point to real sources so you can read further yourself.

Where should I start?

Cell 101 is the plainest on-ramp — it walks you through the whole model in one read. From there, the Start Here page lays out three simple first moves, one from each world (Cell, Mind, and Meaning), and the free tools let you put something into practice today at no cost.

Vitamin B3 | Ingredient | The Holistic Hub

EmergingCell

Strong for deficiency correction (pellagra); NAD+/sirtuin gene-regulation mechanism well described, cognitive-aging link more preliminary.

How it works

Transform — forms NAD+ and NADP+, coenzymes required for hundreds of redox reactions across energy metabolism
Maintain — NAD+ is the required substrate for PARP DNA-repair enzymes
Adapt — NAD+ is the required substrate for sirtuin deacetylases, which remove acetyl groups from histones and transcription factors to regulate gene expression
Process — brain tissue is highly NAD+-dependent for its energy metabolism, and NAD+ decline with age is an active research area in cognitive-support science, though translating that cellular finding into a proven human cognitive benefit from supplemental niacin/niacinamide in a non-deficient adult remains an open question
Exchange — the body can also synthesize a limited amount of niacin endogenously from the amino acid tryptophan (roughly 60mg tryptophan making 1mg niacin), which is why niacin is technically classified as a 'conditionally essential' nutrient rather than a strict vitamin

ServesTransform Maintain Adapt Exchange Process

Form matters

The same nutrient can be made in very different forms — and a study done on one form does not automatically apply to another. Methylcobalamin is not cyanocobalamin; magnesium glycinate is not magnesium oxide; a whole-food extract is not the synthetic isolate that was studied. Two things decide whether what is in the bottle behaves like the research: the exact form, and independent lab verification (a Certificate of Analysis) that the form and dose on the label are truly what is inside. Without a COA, you are trusting a label, not the science.

Works well with

LifePak NAD-Power

The science on Vitamin B3

Balanced by design — we show supporting and contradicting findings. Search all studies

Found in these products

LifePakFoundation Nutrition NAD-PowerEnergy & Mitochondria

Vitamin B3

How it works

Form matters

Works well with

The science on Vitamin B3

Perturbation of NAD(P)H metabolism with the LbNOX xenotopic tool extends lifespan and mitigates age-related changes.

NAD+ and Sirt5 restore mitochondrial bioenergetics failure and improve locomotor defects caused by sucla2 mutations.

Niacin Derivatives in MASLD: Metabolic and Therapeutic Insights.

Targeting NAD Homeostasis: Compartmentalization, Quantification, and Modulation.

The differential impact of three different NAD+ boosters on circulatory NAD and microbial metabolism in humans.

NAD⁺ supplementation for anti-aging and wellness: A PRISMA-guided systematic review of preclinical and clinical evidence.

Found in these products