NAD+ Level Estimator
NAD+ is essential for energy, focus, and cellular repair, and it declines significantly with age. Estimate where your levels might be.
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How old are you?
What is NAD+ and why does it decline?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme present in every living cell. It's essential for converting food into cellular energy, repairing damaged DNA, activating sirtuins (longevity proteins), and regulating your circadian rhythm.
NAD+ levels peak in your 20s and decline steadily thereafter. By age 40, most people have lost over 50% of their peak NAD+. By 60, levels can drop to 25% or less. This decline is accelerated by chronic stress, poor sleep, alcohol consumption, and sedentary behavior.
For women, the menopause transition compounds NAD+ decline with falling estrogen and progesterone, creating a double hit to energy production, cognitive function, and cellular repair mechanisms.
Supplementing with NAD+ precursors like nicotinamide riboside (NR) has been shown in clinical studies to safely and effectively raise NAD+ levels, supporting energy, focus, metabolic health, and healthy aging.
How is NAD+ measured clinically?
Clinical NAD+ levels are typically measured through blood tests that analyze intracellular NAD+ concentrations in whole blood. Some advanced panels use mass spectrometry to measure NAD+ and its metabolites. While not yet a routine part of standard bloodwork, NAD+ testing is increasingly available through longevity-focused providers.
What are NAD+ precursors?
NAD+ precursors are compounds your body converts into NAD+. The two most studied are NR (nicotinamide riboside) and NMN (nicotinamide mononucleotide). Both have been shown to raise NAD+ levels in human clinical trials with good safety profiles. Kina uses physician-formulated NAD+ as part of a personalized longevity care plan.
Is this estimator accurate?
This tool provides a directional estimate based on lifestyle and age factors known to influence NAD+ levels. It is not a clinical measurement. For precise NAD+ levels, blood testing through a healthcare provider is recommended.