Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are a class of drugs widely prescribed by physicians to control blood sugar in the treatment of type 2 diabetes and are nowbeing highly acclaimed for their advantages in weight management as well. GLP-1RAs mimic the physiological effects of the glucagon-like peptide-1 (GLP-1) hormone, which is among a large group of satiety hormones naturally produced by the body and released into the intestines in response to food intake. GLP-1 signals the release of insulin by the pancreas for glucose uptake from the blood; it slows the transit of food through the stomach inducing fullness and satiety; and it mediates nutrient absorption, breakdown, and utilization.

Studies on GLP-1RAs have shown they induce a slew of other favorable biological effects as well, such as reduced inflammation, improved heart function, reduced body fat storage, and improved hypothalamic regulation of body weight and energy (calorie) expenditure. Altogether GLP-1RA therapy leads to weight loss by way of appetite control and reduced food intake, and also by way of efficient sugar, fat, and energy metabolism. However, it is critical for GLP-1RA drugs, such as semaglutide and tirzepatide, to be used in conjunction with improved diet and exercise to better guarantee results and a healthier body long term.

Specific foods and eating behaviors boost the secretion and effects of GLP-1 naturally, and may, therefore, safely enhance the effects of GLP-1RA therapy. The production of gut peptides is greatly influenced by the integrity of the gut microbiota. Food that cultivates a strong microbiota, like fermentable carbohydrates, dietary fiber, and probiotics have been found to increase secretion of GLP-1 into the gut. Tea, curcumin, cinnamon, wheat, soybean, and resveratrol have also been found to promote GLP-1 release into the gut. Furthermore, the timing of food intake throughout the course of a day has profound effects on digestion and satiety hormones, with daytime eating being significantly favorable for GLP-1 production and action. Aside from diet being a fundamental means of achieving health, good nutrition can work in tandem with GLP-1RA therapy to reach weight and health goals more efficiently and rapidly.

Nutrition and dietary behaviors can also mitigate or prevent common side effects of GLP-1RA therapy. Short-term side effects are predominantly gastrointestinal, with patients frequently experiencing nausea, vomiting, and diarrhea. A registered dietitian can help patients eat in specific ways that alleviate such gastrointestinal symptoms, in addition to monitoring the onset of more severe symptoms. Those utilizing the medications at higher doses or for longer duration, specifically for weight loss, tend to be at greater risk of more severe side effects, such as acute cholecystitis (inflammation of the gallbladder) and pancreatitis (inflammation of the pancreas).

Although GLP1-RA are acclaimed for their reduced tendency to induce hypoglycemia, it is always a risk to be considered with diabetic medications. Adequate carbohydrate, fat, and protein intake remains critical to maintain blood nutrient levels and avoid deficiencies. Medical nutrition therapy protocols can reduce the risk of mild or severe side effects; and with the help of a registered dietitian, this can be done according to the patient's personal condition and needs.

Exercising while on GLP-1RA therapy is also critical to enhance health outcomes both short-term and long-term. One study found that GLP-1RA together with habitual physical activity enhanced pancreatic insulin function more so than GLP-1RA alone, making it easier to manage blood sugar and quicker to lose weight. Weight loss often comes with muscle mass loss as the body taps into fat and protein reserves in a setting of caloric restriction. Muscle loss can lead to a reduced resting metabolic rate and, in turn, an increased risk for future weight regain.

Appropriate exercise type and frequency can slow or prevent the decrease in muscle mass during weight loss and, instead, maintain, or even build, muscle strength and one’s resting metabolic rate. In addition to making GLP-1RA therapy more effective, exercise helps one reap the benefits of weight loss without the metabolic costs that may come with it, making it easier to achieve and maintain goals long-term.

Adopting appropriate nutrition and exercise habits would allow one to eventually wean off of a GLP-1RA with significantly lower risks of rebounding to previous unfavorable weight and health status. It is preferable to avoid drug dependency and the unknowns that come with it. Pumping the body with one hormone for too long may throw off the metabolic harmony innately desired for smooth physiological function. Patients who require GLP1-RA therapy to achieve specific metabolic and weight goals must adopt nutrition and exercise practices in order to eventually, and more quickly, discontinue use and still be able to maintain the numbers they have achieved.

It is proven that good nutrition coupled with habitual physical activity is the most effective means of achieving optimal all-around health of the body (and mind) without any adverse effects when done safely. Just as importantly, nutrition and exercise education and practice give a patient autonomy over his or her own health, which itself is empowering, motivating, and promising to the individual—not to mention, relieving to the medical professional and overall health system. Nutrition and exercise lifestyle improvements while on GLP-1RA therapy will not only enhance the beneficial effects of the GLP-1RAs, it will also set patients up for health success long-term.

References
[1] Zhao X, Wang M, Wen Z, Lu Z, Cui L, Fu C, Xue H, Liu Y, Zhang Y. GLP-1 Receptor Agonists: Beyond Their PancreaticEffects. Front Endocrinol (Lausanne). 2021 Aug 23;12:721135. doi: 10.3389/fendo.2021.721135.
[2] Dungan K, DeSantis A. Glucagon-like peptide 1-based therapies for the treatment of type 2 diabetes mellitus.UpToDate. 2023 Nov.
[3] Shah M, Vella A. Effects of GLP-1 on appetite and weight. Rev Endocr Metab Disord. 2014 Sep;15(3):181-7. doi:10.1007/s11154-014-9289-5.
[4] Yaribeygi H, Jamialahmadi T, Moallem SA, Sahebkar A. Boosting GLP-1 by Natural Products. Adv Exp Med Biol.2021;1328:513-522. doi: 10.1007/978-3-030-73234-9_36.
[5] Covasa M, Stephens RW, Toderean R, Cobuz C. Intestinal Sensing by Gut Microbiota: Targeting Gut Peptides. Front Endocrinol (Lausanne). 2019 Feb 19;10:82. doi: 10.3389/fendo.2019.00082.
[6] Janus C et al. Habitual physical activity is associated with lower fasting and greater glucose-induced GLP-1response in men. Endocrine Connections. 2019 Dec; 8:12, 1607-1617. doi.org/10.1530/EC-19-0408
[7] Weiss EP, Jordan RC, Frese EM, Albert SG, Villareal DT. Effects of Weight Loss on Lean Mass, Strength, Bone, and Aerobic Capacity. Med Sci Sports Exerc. 2017 Jan;49(1):206-217. doi: 10.1249/MSS.0000000000001074.

About the Author
Marissa Zarco Hoffman is the founder of her private practice, Marissa Zarco Nutrition, where she provides personalized nutrition therapy for a wide range of needs, including weight management, athletic performance, pre- and post-natal nutrition, and medical conditions. She also conducts seminars for businesses and volunteers in the community to educate youth. Marissa holds a Master of Science in Nutrition and Exercise Physiology from Columbia University
and a Bachelor of Science in Biological Anthropology and Anatomy from Duke University. You can visit her online at www.marissazarconutrition.com or on Instagram (@MarissaZarcoNutrition).

Disclaimer: The content contained in this article has been written by Marissa Zarco Hoffman, MS, RD, LD/N of Marissa Zarco Nutrition, LLC in good faith, but is not intended to be a substitute for advice, diagnosis or treatment by a qualified medical professional. Marissa Zarco Hoffman, MS, RD, LD/N is not held liable for the use of and reliance on the opinions, estimates, forecasts and findings in this document.

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In the world of longevity and wellness, NAD+ (nicotinamide adenine dinucleotide) has emerged as a key player in the quest for healthy aging and enhanced vitality. Known for its role in cellular energy production and DNA repair, NAD+ is essential for maintaining the health of our cells and, ultimately, the health of our bodies. As we age, NAD+ levels decline, contributing to fatigue, cognitive decline, and the visible signs of aging. By replenishing NAD+ levels through supplements or IV therapy, we can combat these effects and support overall wellness.

In this blog post, we’ll explore the many benefits of NAD+, how it supports healthy aging, and what you need to know about potential side effects.

What is NAD+?

NAD+ is a coenzyme found in every living cell, and it plays a central role in energy metabolism, DNA repair, and overall cellular health. Without NAD+, our cells wouldn’t be able to produce the energy (ATP) required for normal function, and they’d struggle to repair damage caused by oxidative stress and environmental factors. NAD+ is also critical in activating sirtuins, proteins involved in regulating metabolism and promoting longevity.

However, as we get older, NAD+ levels naturally decline. This drop is associated with many of the symptoms of aging, including reduced energy, slower metabolism, and increased risk of chronic diseases.

The Benefits of NAD+ for Health and Longevity

1. Enhanced Cellular Energy Production

NAD+ is essential for converting the nutrients we eat into usable energy. It helps facilitate the chemical reactions in our mitochondria—the “powerhouses” of our cells—that produce ATP (adenosine triphosphate), the energy currency of the body. By increasing NAD+ levels, we can support efficient energy production, which leads to better physical performance, reduced fatigue, and improved overall energy levels.

• Key Benefit: Increased energy levels and improved physical endurance.

2. Promotes Healthy Aging and Longevity

Research into NAD+ has shown that it plays a crucial role in activating sirtuins, proteins that regulate cellular health and longevity. Sirtuins help protect our cells from damage, regulate inflammation, and support DNA repair processes, all of which contribute to healthy aging. By boosting NAD+ levels, we can potentially extend our healthspan—the number of years we spend in good health—and reduce the risk of age-related diseases.

• Key Benefit: Slows down the aging process and supports healthy aging at the cellular level.

3. Improved Cognitive Function

NAD+ not only supports physical energy but also mental energy. NAD+ levels are closely linked to brain health and cognitive function. By increasing NAD+, you can enhance brain energy metabolism, improve memory, and protect against neurodegenerative diseases like Alzheimer’s and Parkinson’s. Research suggests that NAD+ may help preserve brain function and promote neuroplasticity, the brain’s ability to adapt and learn new things.

• Key Benefit: Enhances memory, cognitive clarity, and focus.

4. DNA Repair and Protection

NAD+ plays a significant role in repairing damaged DNA, which accumulates over time due to factors like UV radiation, pollution, and normal metabolic processes. When our DNA is damaged, it can lead to mutations and contribute to the development of diseases, including cancer. NAD+ activates enzymes like PARPs (poly ADP-ribose polymerases) that are responsible for repairing DNA damage, protecting against cellular dysfunction and chronic illness.

• Key Benefit: Supports DNA repair and reduces the risk of mutations and age-related diseases.

5. Boosts Metabolism and Weight Management

With age, metabolism tends to slow down, leading to weight gain and increased risk of metabolic disorders like diabetes. NAD+ is involved in regulating metabolic processes, and higher NAD+ levels have been linked to better insulin sensitivity and more efficient fat metabolism. Some studies suggest that NAD+ may even enhance the body’s ability to burn fat, which can aid in weight management and reduce the risk of obesity-related diseases.

• Key Benefit: Promotes a healthy metabolism and supports weight management.

6. Reduces Inflammation and Oxidative Stress

Chronic inflammation and oxidative stress are two key drivers of aging and disease. NAD+ helps regulate the body’s response to inflammation by supporting the production of antioxidants and activating anti-inflammatory pathways. This can reduce the overall burden of oxidative stress on the body, promoting a healthier, longer life.

• Key Benefit: Reduces inflammation and protects against oxidative damage.

How to Boost NAD+ Levels

There are several ways to increase NAD+ levels, including:

• NAD+ Precursors: Supplements like nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) can boost NAD+ production in the body.
• IV NAD+ Therapy or Injections: Direct NAD+ infusions can bypass digestion and deliver the coenzyme directly to cells, offering faster, more effective results.
• Lifestyle Choices: Intermittent fasting, exercise, and a balanced diet rich in nutrients can naturally support NAD+ levels.

Potential Side Effects of NAD+ Supplementation

While NAD+ supplementation offers numerous benefits, it’s essential to be aware of potential side effects, particularly with higher doses or IV therapy. Most people tolerate NAD+ precursors and supplements well, but some side effects can occur, including:

• Nausea: Some people report mild nausea or digestive discomfort after taking NAD+ supplements or receiving IV therapy.
• Fatigue: While NAD+ generally improves energy, some people experience temporary fatigue after taking supplements or undergoing treatment. This may be due to the body’s increased demand for NAD+ as it ramps up energy production and repair processes.
• Headaches: A small percentage of users report mild headaches after taking NAD+ supplements.
• Flushing or Sweating: Some people experience a temporary feeling of warmth or flushing, particularly with IV NAD+ therapy.

It’s important to start with a lower dose of NAD+ and gradually increase it under the guidance of a healthcare professional to minimize potential side effects. For individuals with existing medical conditions or those taking other medications, it’s advisable to consult a healthcare provider before starting NAD+ supplementation.

Conclusion: NAD+ for a Healthier, Longer Life

NAD+ is a critical molecule for cellular energy, DNA repair, and overall health. As we age and NAD+ levels decline, we become more vulnerable to fatigue, cognitive decline, and age-related diseases. By boosting NAD+ levels through supplementation or IV therapy, you can support healthy aging, enhance cognitive function, improve metabolism, and reduce inflammation.

While NAD+ offers powerful benefits for longevity and vitality, it’s essential to approach supplementation with care, considering any potential side effects and working with a healthcare provider to determine the best course of action for your individual health needs.

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