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...

Medically reviewed | Last updated on May 29, 2026 Metastasis or Stage 4 cancer is a multi-step biological process in which cancer cells detach from the primary tumor, invade surrounding tissue, enter the bloodstream or lymphatic system, survive circulation, exit into distant organs, and establish new tumors. What is Stage 4 Cancer? Stage 4 cancer, also known as metastatic cancer, is the most advanced stage of cancer, where the disease has spread beyond its original site to other organs or tissues. The spread can occur through the bloodstream, lymphatic system, or direct extension. Grasping what stage 4 cancer involves is essential for understanding treatment options, prognosis, and managing expectations.  Unlike localized cancer, metastatic cancer behaves as a system-wide disease , not a single tumor. Here, we explore the intricacies of stage 4 cancer, including diagnosis, treatment strategies, and how to maintain quality of life. The Metastatic Cascade (Core Mechanism) Metastasis...

Table of Contents — I-PREVENT CANCER Protocol (Best Diet and Cancer Fighting Supplements) Introduction – Why preventive strategies matter and overview of the I-PREVENT framework Methodology – How evidence was selected and interpreted Causes of Cancer – Diet, lifestyle and biological contributors Diet and Cancer – Nutrition and eating patterns for prevention The ACS 2020 Recommendation A 2024 Update to ACS International Guidelines Avoid Processed Foods and Sugar Plant Based Diet and Mediterranean Diet  Dietary Fiber Fasting, Calorie Restriction, Low-Carb Diet and Keto Diet (Controversial) Cooking, Processing, and the Real Cancer Risks of Meat Coffee and Cancer Tattoos, Chemical Hair Straighteners and even Hot Tea linked to Cancer Can the raw food diet prevent cancer? Lifestyle Recommendations – Alcohol avoidance, exercise, risk behavior modifications Best Anti-Cancer Supplements – Individual supplement sections (in order of importance) Vitamin D3, Vitamin K2 & Omega-3 Tur...