The Medical Advisor

NAC vs NAD vs NR vs NMN ? Due to the small alphabetical differences, these supplements are often mixed up and confused by most consumers. We will cover the essentials and explain about each of these supplements below. NAD NAD is derived from Nicotinamide Riboside (NR). The levels of NAD in our body determine the speed of aging process. In younger cells and tissues, the levels of NAD are higher. As a result, younger people tend to have better physical activity, cognitive function and potential for cell repair and regeneration. As we grow, the levels of NAD in our body start to decline. This is reflected in the form of slowed cognitive response, loss of memory and reduced agility. Related:  Longevity and Anti Aging 101: What You Need to Know  (A Comprehensive Guide) Research suggests it may be possible to reverse mitochondrial decay with dietary supplements that increase cellular levels of a molecule called NAD (nicotinamide adenine dinuc...

Abstract Background: Aging and major chronic diseases—including type 2 diabetes, cardiovascular disease, neurodegeneration, and certain cancers—share overlapping metabolic abnormalities. Emerging evidence suggests that disturbances in redox balance (NAD⁺/NADH), insulin signaling, and nutrient-sensing pathways (AMPK and mTOR) may represent convergent upstream mechanisms. Objective: To synthesize mechanistic and translational evidence into a unified systems biology model describing how chronic nutrient excess and impaired metabolic oscillation influence aging and disease pathogenesis. Methods: Narrative synthesis of peer-reviewed literature across redox biology, mitochondrial physiology, insulin signaling, geroscience, and neurodegeneration. Emphasis was placed on mechanistic plausibility, human interventional data where available, and cross-disease convergence. Results: Chronic energy surplus is associated with altered NAD⁺/NADH ratios, mitochondrial dysfunction, hyperinsulinemia, p...

In the video below (1), board-certified dermatologist Dr. Andrea Suarez, known online as Dr. Dray, shares some fascinating insights about niacinamide, a water-soluble form of vitamin B3 (niacin), and its benefits for skin health. Niacinamide, also known as nicotinamide, is a precursor for NAD+, which is not only involved in the conversion of food to energy but is also important in the process of repairing damaged DNA. This is crucial because your skin faces constant environmental stressors, including ultraviolet (UV) radiation, which can damage DNA in skin cells and suppress your immune system. Niacinamide shows promise for skin cancer prevention due to its ability to enhance DNA repair and reduce UV-induced immunosuppression in skin cells. These mechanisms are useful in preventing the development of non-melanoma skin cancers (NMSCs), which include basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). The Promise of Niacinamide for Skin Cancer Prevention Clinical trials ...

Have you ever seen someone walking on a tightrope in the circus, carefully keeping their balance so they do not fall off? That is a little like what happens inside your body every day, except instead of a person balancing on a rope, your cells are balancing something called redox reactions. The word "redox" might sound fancy, but it is just short for two smaller words: reduction and oxidation. Redox imbalances in cells, characterized by disrupted equilibrium between oxidants (such as reactive oxygen species, ROS) and antioxidants, significantly affect cellular health and function. This imbalance can manifest as either oxidative stress (excess oxidants) or reductive stress (excess reductants), both detrimental to cellular processes ( 1 ). Redox reactions happen continuously to help you stay healthy, move around, think clearly, and even sleep. When you eat an apple or a sandwich, your body has to take the energy that is stored in your food and turn it into a form your cells can...