What 20 years of NAD+ research actually tells us

Peer-reviewed research continues to reveal NAD+'s role in cellular energy, metabolic health, and healthy aging. Here's what the science says.

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June 18, 2026 2:27am EDT

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The Science Is Clear. Your Cells Are Paying Attention.

NAD+ isn't a wellness trend that came and went. It's one of the most rigorously studied molecules in biology — and the more researchers look, the more essential it becomes.

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Here's what the science has been telling us for years:

"NAD+ levels decline by approximately 50% between early adulthood and midlife — and continue falling with each decade."

-Cell Metabolism, Verdin et al. — NAD+ in aging, disease, and metabolism.

That decline matters because NAD+ isn't a passive molecule.

It's an active participant in mitochondrial function — the process by which your cells convert nutrients into usable energy.

When NAD+ drops, so does the efficiency of that process. Fatigue, slower recovery, and reduced mental clarity are often the first signals your body sends.

"NAD+ activates sirtuins — a family of proteins linked to DNA repair, inflammation regulation, and cellular longevity."

-Science, Guarente et al. — Sirtuins, aging, and medicine.

Think of sirtuins as your body's internal maintenance crew.

They help repair damaged DNA, regulate inflammatory responses, and support the kind of cellular housekeeping that keeps you functioning well as you age.

NAD+ is what keeps them working. Without adequate levels, that maintenance slows.

"Clinical research shows that NAD+ precursor supplementation can meaningfully restore circulating NAD+ levels in adults — with observed improvements in energy, muscle function, and metabolic markers."

Nature Aging, Yoshino et al. — Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women.

This is why supplementation matters.

Your body can't manufacture NAD+ in the quantities it once could — but it can use what you give it.

A clean, bioavailable source gives your cells the raw material to do what they're designed to do.

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NAD+ purchase earns 2X Live Healthy Rewards points.

At Global Healing, we don't make health claims lightly.

We believe in giving you access to the research, the ingredients list, and the full picture — so your healing choices are genuinely yours to make.

Our NAD+ formula is built on that same standard: clean ingredients, transparent sourcing, and a formulation designed to support what the science points to.