Immunity 360: 12 Ways to Strengthen Your Body From the Inside Out

9. Smart Supplement Use: Vitamin C, Zinc, and Evidence-Based Formulas

Supplements can help when dietary intake or testing shows a shortfall, but they are not a replacement for a healthy diet and lifestyle. Vitamin C and zinc are two commonly used supplements for short-term immune support; evidence suggests they may shorten the duration of some colds when used appropriately. Choose reputable brands and check ingredient lists for doses and form—some forms are easier on digestion than others. Read labels for third-party testing seals to reduce the risk of contaminants or dose inconsistencies. Avoid megadoses without medical supervision since excessive intake can cause side effects and interfere with other nutrients. If you're taking medications or managing chronic conditions, consult your clinician or pharmacist about interactions. Treat supplements as targeted tools: useful in specific contexts, but part of a layered approach rather than a standalone solution.

10. Cellular Support: CoQ10, NAD+ and Metabolic Health

Immune cells rely on healthy cellular energy and mitochondrial function to respond to threats effectively. Nutrients such as CoQ10 support energy production in cells, and metabolic health—regulated by sleep, nutrition, and activity—underpins immune resilience. Emerging therapies like NAD+ supplementation or IV-based NAD+ claim benefits for cellular repair and energy; research is still developing and evidence varies by condition. For most people, focusing first on metabolic health through balanced meals, movement, regular sleep, and stress management offers the greatest benefit with the least risk. If you are exploring supplements or advanced therapies for cellular support, discuss goals and potential risks with a clinician who understands your medical history. Where clinical treatments are pursued, prioritize providers who use testing, monitor vital signs, and explain realistic outcomes rather than promising rapid fixes.