In wellness discussions and across social media, there’s a growing buzz surrounding NAD, a small but powerful molecule that many claim could enhance energy levels, improve focus, and even hold potential anti-aging properties. As celebrities and influencers rave about it as a magical remedy, it raises an important question: Should we consider taking NAD supplements? Let’s explore what NAD is, its functions, and if the hype is justified.
What is NAD?
NAD (nicotinamide adenine dinucleotide) is a fundamental molecule found in every cell, playing a crucial role in converting food into energy. You can think of it as a rechargeable battery, constantly shifting between two forms: NAD+ and NADH (its oxidized and reduced states) to keep your cells operating efficiently.
As we age, the levels of NAD naturally decline, leading scientists to investigate whether supplements can help replenish these levels.
Of late, NAD has gained traction in wellness communities, often marketed as supplements available in various formats such as IVs, injections, and tablets.
How NAD Functions
“NAD+ is essential for energizing our cells,” explains Chloe Bates, clinical team lead at Pause Studio in Nashville. “Mitochondria are often referred to as the powerhouse of the cell because they generate ATP, which provides energy for cellular functions.”
NADH serves a vital role in this energy creation process by carrying high-energy electrons to the mitochondria, assisting in ATP production—the primary energy currency of our cells. NAD constantly shifts forms as part of normal metabolic processes.
NAD’s Three Primary Functions
- Energy Production
- Nutrients from food are broken down and utilized by your mitochondria.
- NAD assists in capturing high-energy electrons during this process (as NADH) and delivers them to the “power chain” that ultimately produces ATP, your body’s main energy molecule.
- Repair and Maintenance
- Several enzymes involved in DNA repair or the management of inflammation and stress responses depend on NAD⁺ to function effectively.
- As we age or endure stress, we may deplete NAD⁺ levels more quickly for repair processes.
- Cellular Communication
- NAD and its byproducts act as signaling molecules, guiding cells on how to respond to stress, damage, and metabolic shifts.
When NAD Levels Are Optimized
“When NAD levels are adequately replenished, clients frequently report elevated energy and improved mental clarity,” notes Chloe from Pause Studio. “NAD also plays a role in anti-aging by aiding the repair of DNA compromised by environmental stressors like UV rays and enhancing the production of collagen, elastin, and keratin, contributing to firmer skin.”
When NAD Levels Deteriorate
Insufficient NAD levels hinder your cells from efficiently generating energy or facilitating necessary repairs. As we grow older, NAD levels tend to drop, which has been linked to tired cells and age-related illnesses. This decline has sparked interest among older adults, as well as younger individuals concerned about aging.
“NAD levels begin to diminish around the age of 30, and lifestyle factors such as poor diet, inadequate sleep, and high stress can speed this decline. Insufficient NAD can lead to fatigue, cognitive fog, slower recovery times, and diminished resilience,” affirms Chloe.
Melissa Rhodes, owner and Aesthetic NP-C at Ona Skincare in Nashville, emphasizes that NAD supplementation is about supporting your body’s functionality as it ages, not reversing time. She clarifies that:
Ideal candidates for NAD supplementation typically include:
- Individuals experiencing chronic fatigue or burnout despite healthy lifestyle choices
- Those undergoing perimenopause or other midlife metabolic challenges
- High achievers noticing a decline in energy, focus, or recovery
- Patients already following a comprehensive wellness plan (nutrition, sleep, hormonal balance)
Conversely, not ideal candidates include:
- Individuals seeking a rapid, easy solution without lifestyle modifications
- Patients who haven’t addressed their sleep, nutrition, or stress
- Those with active cancer or high cancer risk
“If the foundational aspects of health aren’t in place, NAD may not offer the solution you’re looking for,” adds Melissa. “Niagen, an NAD precursor, is often recommended as it encourages your body to produce its own NAD, instead of just supplementing.”
Limitations and Cautions
It’s essential to note that taking NAD (or its precursors) orally doesn’t guarantee it will effectively reach your cells. The large, charged nature of the molecule hinders its transport across cell membranes. Many medical professionals prefer administering NAD through IVs or injections since oral intake often results in degradation in the gut and bloodstream. Furthermore, most human studies on NAD have been short-term or on a small scale.
“It’s crucial for patients to understand the limitations of NAD,” warns Dr. Christopher Sizemore, OB-GYN and Chief Medical Officer at Diana Health in Nashville. “Most enthusiasm surrounding NAD stems from animal research or cellular studies. Although the underlying biology is intriguing, we lack strong evidence demonstrating significant clinical effects in humans.”
“NAD is vital for cellular energy, and its levels drop with age. However, the case for supplementation is still evolving. I encourage patients to make informed decisions rather than assuming these supplements are fully proven or without risk,” says Heather Craig, Registered Dietitian and owner of HBC Nutrition.
In some cases, NAD supplementation could be risky, caution Sasha Carroll, RN, and Tara Johnson, NP, peptide specialists at Level Wellness Franklin. “People with active or recent cancer, autoimmune conditions, kidney issues, or liver disease should avoid NAD treatment, as it can potentially fuel the growth and survival of cancer cells.”
Additionally, the quality and source of NAD products are crucial.
“Not all NAD-related products are manufactured to the same standard. Manufacturing locations, compounding methods, and testing for purity and sterility are all significant factors,” explains Sierra Waine, founder of Society Wellness and Skin Spa in Birmingham. “In a rapidly growing market, quality can vary widely, and consumers may not always be aware of this,” she continues. “Be cautious when purchasing supplements online or from unreliable sources.”
Start with the Essentials
Although the verdict on NAD remains unclear, specialists agree that lifestyle habits should come first before considering supplementation. Prioritizing high-quality sleep, maintaining a balanced diet, staying active, and managing stress effectively are all essential, says Chloe of Pause Studio.
If you find that, even after adopting these lifestyle habits and keeping up with annual health check-ups, your energy remains low, then discussing NAD+ intramuscular or intravenous options with your healthcare provider could be worthwhile.
“I recommend a monitored, short-term trial of NAD if other validated methods are not providing satisfactory results,” advises Dr. Sizemore.
“All treatments should be introduced carefully and in moderation, alongside professional medical care, with attention to labs and medical history,” adds Melissa of Ona Skincare. “While the science behind NAD is encouraging, we are still in the initial stages regarding human outcomes. Some patients do report improvements in energy, cognitive clarity, or recovery, but individual responses can vary. We don’t view NAD as a panacea or guarantee, but rather as a part of a broader strategy.”
The Conclusion
Experts agree that NAD supplementation is not a one-size-fits-all solution and emphasize the need for further human clinical studies. However, it may be a viable option for some individuals, particularly if their symptoms and lifestyle align with the outlined criteria.
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