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January 09, 2025 5 min read
Nicotinamide adenine dinucleotide (NAD) is a naturally occurring coenzyme found in every cell of the body. It plays a critical role in converting food into energy, repairing DNA, protecting cells from inflammation, and even regulating our internal clock. In recent years, NAD supplements have become very popular due to claims that they can boost metabolism, protect against disease, and slow – or even reverse – the effects of aging. In this post, we explore what NAD is, how NAD supplements work, and some of the potential benefits they may provide.
NAD levels tend to decline as we age, and this drop is associated with many common age-related conditions including reduced energy, increased inflammation, cognitive decline, and impaired metabolism. Researchers have been investigating whether supplementing with NAD or its precursor molecules can restore these levels and thereby improve overall health.
Increases Energy, Enhances Cognitive Function, and supports healthy aging.
Learn MoreAt its simplest, NAD is a coenzyme that plays a supportive role for hundreds of enzymes in all of our cells. It exists in two forms: the oxidized form (NAD⁺) and the reduced form (NADH). These two forms help shuttle electrons during chemical reactions that produce energy within our mitochondria (the cell’s powerhouses). Without NAD to help run these reactions, our cells would struggle to create the energy needed for healing, repair, and daily activities.
The decline in NAD levels has been linked to a variety of metabolic and age-related diseases. This has spurred scientist interest in ways to restore or boost NAD levels as a potential method for improving overall vitality and slowing the aging process.
The proposed benefits of NAD supplements are wide-ranging:
Together these benefits make NAD a promising target in the quest for promoters of healthy aging and improved quality of life.
Increases Energy, Enhances Cognitive Function, and supports healthy aging.
Learn MoreSince taking NAD directly is challenging due to its instability and poor bioavailability, most supplements work by providing one of its precursors. The two most widely used precursors are:
Other forms of vitamin B3—including niacin (nicotinic acid) and niacinamide—can also act as NAD precursors, but they may not increase NAD levels to the same degree as NR or NMN. When choosing a supplement, it’s important to read the labels carefully so you know which form you are taking and in what dosage.
Most of the initial evidence supporting NAD supplements comes from preclinical studies. In animal models, restoring NAD levels has led to improvements in several indicators of health:
In human trials, experts have observed that supplementation with NR can increase NAD⁺ levels in the blood. However, the research is still in its early phases, and more extensive clinical trials are needed to fully understand whether boosting NAD levels translates into long-term health benefits for conditions like cognitive decline, heart disease, and metabolic dysfunction.
Increases Energy, Enhances Cognitive Function, and supports healthy aging.
Learn MoreNAD supplements are available in several delivery forms, which include:
Because NAD levels naturally vary from person to person—and decline with age—it’s important to consult with a healthcare provider before starting any NAD supplementation. They can provide guidance on the appropriate type, dosage, and frequency based on your overall health and specific goals.
NAD supplements, especially those based on NR, are generally considered safe when taken at recommended doses. Most clinical trials have reported minimal side effects, which may include mild gastrointestinal discomfort, headache, or skin flushing. Some individuals who use injectable forms report temporary discomfort at the injection site.
There isn’t a universally "required" dosage since individual needs can vary. Research has tested doses ranging from 250 milligrams to 1,000 milligrams per day, sometimes with dosing split into multiple sessions throughout the day to enhance absorption. It’s essential to remember that while boosting NAD levels shows promise, supplements are not a replacement for a healthy lifestyle and are not meant to diagnose, treat, cure, or prevent any disease.
Because the long-term benefits of NAD supplementation still require more research, and because dietary supplements are regulated as foods (rather than drugs), quality can vary significantly between products. Look for reputable brands that offer third-party testing and clear labeling of ingredients and dosages.
Increases Energy, Enhances Cognitive Function, and supports healthy aging.
Learn MoreIn addition to supplementation, lifestyle habits play an important role in maintaining healthy NAD levels. Regular exercise, a balanced diet rich in nutrients (including foods that naturally contain vitamin B3 like turkey, fish, and legumes), sufficient sleep, and stress management are all essential parts of supporting your body’s natural ability to produce NAD.
Researchers are also exploring other strategies to boost NAD levels naturally. These include lifestyle interventions (such as intermittent fasting and heat therapy using saunas) which have been shown to activate cellular pathways that protect and rejuvenate cells. Combining these natural approaches with targeted supplementation may offer a more comprehensive strategy to promote healthy aging.
The future of NAD research is promising. Ongoing clinical trials are working to identify optimal dosing regimens, determine the long-term effects of supplementation, and expand our understanding of how boosting NAD can improve outcomes in patients with chronic diseases such as Alzheimer’s, Parkinson’s, heart failure, and diabetes. The hope is that one day, NAD-boosting therapies may become an important component of personalized medicine aimed at extending healthspan rather than just lifespan.
NAD supplements have captured the interest of researchers and wellness enthusiasts alike due to their potential benefits in boosting cellular energy, supporting metabolism, improving cognitive function, and fighting signs of aging. While exciting preclinical studies and early human trials suggest a positive role for NAD‐boosting compounds, current scientific evidence is still evolving. If you are considering trying NAD supplements, it is important to do your own research and speak with a healthcare provider to determine what form and dosage may be best for your unique needs.
As you explore this burgeoning field, remember that supplements work best when paired with a healthy lifestyle. With ongoing research seeking to optimize the use of NAD precursors, we may soon have even more effective ways to support cellular health and well-being.
Increases Energy, Enhances Cognitive Function, and supports healthy aging.
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