Description
NAD+ — The Cellular Energy Coenzyme
What Is It?
NAD+ (nicotinamide adenine dinucleotide) is one of the most fundamental molecules in human biology. Required for over 500 enzymatic reactions in the human body, it sits at the centre of energy metabolism, DNA repair, and the activation of proteins that regulate how fast we age.
Unlike the peptides on this list, NAD+ is not a chain of amino acids — it’s a coenzyme found in every living cell. But it earns its place in any longevity and research compound line-up because NAD+ levels drop by roughly 50% between your 20s and 60s, and that decline tracks almost perfectly with the hallmarks of ageing — slower recovery, cognitive fog, metabolic dysfunction, and reduced resilience to stress.
For research purposes only. Not for human consumption outside of approved clinical contexts.
What Are Researchers Studying It For?
⚡ Energy & Mitochondrial Function NAD+ is the core molecule powering the mitochondria — the energy-producing structures inside every cell. Restoring NAD+ levels is studied as a way to improve cellular energy output, particularly in tissues with high energy demands like the brain and muscles.
🧬 DNA Repair & Genome Stability Several DNA repair mechanisms are directly dependent on NAD+ to perform their function. The DNA repair enzyme PARP1, and sirtuins 1 and 6 — integral elements of the DNA repair response — are all critically dependent on NAD+ to function. Declining NAD+ levels therefore contribute to reduced DNA repair and an accumulation of DNA damage.
🧠 Brain Health & Neurodegeneration Clinical areas including neurodegeneration, vision, hearing, and inflammation appear to benefit from NAD+ supplementation, making it one of the more promising areas of active human research.
❤️ Cardiovascular Health Because heart cells rely heavily on energy, researchers want to know whether supporting NAD+ levels could help cellular function in the cardiovascular system. Heart tissue is one of the most NAD+-dependent organs in the body.
🔥 Metabolic Health & Insulin Sensitivity A study of women with prediabetes found that NAD+ supplementation with an NAD+ precursor for 10 weeks improved insulin sensitivity. Researchers are actively studying its role in type 2 diabetes and obesity.
✨ Skin Ageing There is growing evidence that NAD+ decline plays a critical role in the biology of skin ageing. An age-associated decrease in both NAD+ and SIRT1 is observed in skin, whilst DNA damage is found to accumulate — ultimately triggering hallmarks of ageing such as cellular senescence.
🌱 Longevity Boosting NAD+ metabolism has been shown to extend the lifespan of various organisms including mice. By increasing NAD+ activity, you don’t get the same rate of cell death, and it can help repair DNA.
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