Women's heart rates are higher than men's, even during sleep. Aspirin use reduces the risk of stroke in men with high blood pressure but not in women. The Immune System Women have higher immunoglobulin levels than men, which give them better virus-fighting powers. Most autoimmune diseases, such as multiple sclerosis, lupus, and rheumatoid arthritis, are more common in women than in men. The Brain Women's brains have more neurons.
Women experience depression two to three times more often than men.
15 percent to 17 percent of women have migraine headaches, compared with only 3 percent to 6 percent of men. Metabolism Women and men metabolize drugs differently, among them benzodiazepines, aspirin, and alcohol. Estrogen and oral contraceptives have a significant impact on the metabolism of many drugs. Bone Women have lower bone mass at peak maturity than men do. 80 percent of the roughly 210,000 hip fractures each year occur in women.