Niacin or Vitamin B3: Forms (nicotinamide and nicotinic acid), its role in skin health and energy, authorized health claims, and its connection to NAD+ and longevity.

Plant-based collagen does not exist as a molecule: vegan alternatives are biomimetic amino acid blends. What they are, what they do, and what the law says.

What is Hydrolyzed Collagen? Why is it used in low-molecular-weight Peptides? What are its animal sources, and how does it differ from Native Collagen and Gelatin?

Oxidative Stress is the imbalance between free radicals and antioxidant defenses. Causes, biological consequences, biomarkers, and the role of antioxidant supplements in counteracting it.

Lipids are macronutrients essential for cell membranes, vitamin absorption, and hormone production. Classification, omega-3 and omega-6 essential fatty acids, and supplementation.

Carbohydrates are the body’s primary source of energy. Simple, complex, and dietary fiber: classification, glycemic index, and role in functional supplements.

Proteins are essential macronutrients composed of amino acids. Biological functions, dietary requirements, food sources, and forms found in supplements for sports, wellness, and health.

Keratin is the fibrous protein that makes up hair, nails, and the stratum corneum. Structure, hydrolyzed forms, mechanism of action, and role in hair care supplements.

The hair follicle is the structure that produces and houses the hair. Anatomy, phases of the hair growth cycle, and the role of key nutrients: Biotin, Zinc, Keratin, Vitamin D, and Iron.

Antioxidants are molecules that counteract free radicals and oxidative stress. Classification, mechanisms, dietary sources, and key ingredients in supplements.