Article highlights:
- NAD+ is a key molecule for cellular energy and metabolism, but levels naturally decline with age.
- Healthy NAD+ levels support metabolic health, including mitochondrial function, insulin sensitivity, fat metabolism, and healthy aging.
- Lifestyle habits and supplements such as NMN, resveratrol, and pterostilbene support NAD+, alongside a healthy diet and regular exercise.
Do you remember when your body seemed to have endless energy and maintaining a healthy weight felt effortless? As the years pass, many people notice declining energy, slower metabolism, and that it becomes harder to stay lean despite eating well and exercising. Although some may turn to weight-loss medications, restrictive diets, and hormone therapies, these don't solve one of the most fundamental drivers of healthy aging: your cells' ability to produce energy.
At the core of that process is NAD+, a molecule that powers your mitochondria, supports metabolic health, and helps your cells repair and function efficiently. As NAD+ levels naturally decline with age, so can your energy, metabolic efficiency, and resilience. Here's why restoring healthy NAD+ levels has become one of the most exciting areas of longevity research.
What is NAD+?
In the adult human body, an estimated 37 trillion cells use NAD+ or nicotinamide adenine dinucleotide to make energy. It supplies 40% of mitochondrial ATP production making it a high demand energy currency.
NAD+ levels affect everything in your body from energy production, metabolism, DNA repair, gene expression, and cellular responses to stress. It is a central and critical factor for maintaining healthy metabolism, mitochondrial function, and overall health.
A Decline in NAD+ Levels
NAD+ levels decline by as much as 65% from your early thirties to age 70, causing age-related decline. In addition, life stress, dietary insufficiencies, illness, injury, and other challenges increase the demand for NAD+.
Overall Age-Related Decline
Loss of NAD+ levels interfere with the activity of NAD-dependent enzymes involved with your body’s ability to repair, resulting in a build-up of aging or worn-out cellular components. In addition, the activity of antiaging proteins SIRT 1-7 is also limited as these sirtuins depend on NAD+. Without that activity, age-related decline increases.
Decreased cellular NAD+ levels impacts all tissues, organs, and cell types that contain mitochondria affecting overall metabolism and function. Loss of ATP production and depleted NAD+ cause the accumulation of subtle, chronic degenerative, and age-related changes and augments the expression of faulty genes or family-genetic health conditions.
Furthermore, in adipose tissue, muscle, liver, and the hypothalamus of the brain, decreasing levels of NAD+ levels cause metabolic inefficiency and changes in adipose metabolism with age-related decline.
NAD+ Levels Affect Adipose Tissue Metabolism, Insulin, Liver
Research demonstrates that healthy NAD+ levels and function are essential for mitochondrial and adipose tissue function, weight management, and overall body metabolism.
Healthy mitochondria function “is especially important for whole-body metabolic health” supporting high insulin sensitivity and fat burning in the liver and reduction of oxidative stress.
Studies have demonstrated the integral role of NAD+ for pancreatic function, glucose tolerance, insulin secretion, and fat metabolism in the liver supporting healthy weight management. However, as NAD+ levels decline and sirtuin activity is disrupted, metabolic activity of adipose tissue becomes disturbed impairing healthy weight management.
Furthermore, sirtuin and NAD+ depletion and inactivity causes fat cells to multiply and interfere with the expression and activity of leptin, thyroid, and other metabolic hormones and compounds.
Clinical Trials and Studies
An 8-week clinical trial evaluated the effect of 250 mg NMN once daily before breakfast in healthy adult men. Results showed NMN safely and effectively boosted NAD+ biosynthesis and supported insulin homeostasis after high carbohydrate intake.
A recent study evaluated the metabolic effect of NMN in post-menopausal women. Results of this 10-week randomized, placebo controlled, double-blind trial demonstrated beneficial metabolic improvements with increased muscle insulin sensitivity and insulin signaling.
Another clinical trial evaluated the effects of NMN in adults 45 years and older. NAD+ levels improved in the bloodstream. Additional findings showed healthy changes in body weight, blood pressure, and cholesterol metabolism.
In animal studies pertaining to maternal and offspring weight and metabolism, NAD+ supports healthy maternal and offspring weight by improving glucose tolerance and liver metabolism and metabolic programming.
Reestablishing NAD+ Levels
Age related changes are happening earlier in life than generations before us despite modern conveniences and disease care. Sedentary lifestyles, nutrient depleted foods, high stress levels, 24/7 living and loss of circadian rhythms contribute to the depletion of NAD+, mitochondrial metabolic dysfunction, insulin and leptin resistance and aging.
Along with a whole foods diet and exercise, nutritional science now affords you a chance to reestablish NAD+ levels with nutrients like NMN and phytonutrient sirtuin activators, resveratrol and pterostilbene to support healthy fat burning and metabolic activity.
NAD+ levels are central to your metabolic health, longevity and health span. Consider adding NAD+ Helper with NMN to your healthy aging routine to keep your energy and metabolism working youthfully for years to come.
Additional Resources
Introducing NAD+ Helper with NMN: Advanced Support for Healthy Aging
Introducing Mitochondria Ultra: Power Your Cells, Energize Your Life
GLP-1 Weight Loss Meds Causes Significant Muscle Loss and SIBO
Resveratrol for Skin, Brain, Heart Health
Pterostilbene: A Timeless Health Tonic for Longevity and Vitality
Longevity Nutrients: How Sirtuins Support Healthy Aging
