Protein, Creatine, Vitamin D & Beta Alanine | Which Supplements Matter After 40?

Women’s physiological responses to supplements and exercise differ significantly from men's due to hormonal influences like the nitric oxide cycle. While protein, creatine, and beta-alanine are backed by robust research for women, many other supplements lack female-specific testing or rely on animal data. Nitrates, for instance, can impair performance in premenopausal women while benefiting postmenopausal individuals. Beyond supplementation, active women over 35 must monitor visceral fat via DEXA scans rather than relying on general body fat percentages, as high endurance training does not always protect against elevated LDL or insulin resistance. Dr. Stacy Sims, an expert in female physiology, emphasizes that heavy resistance training combined with sprint intervals provides the most effective stimulus for mobilizing visceral fat and improving metabolic health by facilitating a direct chemical "conversation" between myokines and the liver.