Which sex is more commonly affected by multiple sclerosis?

Which sex is more commonly affected by multiple sclerosis?

• A. Men
• B. Women
• C. Equal
• D. Neither

Answer: (B)

MS shows a female predominance in who is affected. Women are affected more often than men, with incidence and prevalence higher in women across many populations, commonly about 2 to 3 times more frequent. The typical onset is in young adulthood, roughly between the 20s and 40s. This pattern likely reflects autoimmune factors that are more active in women, along with hormonal, genetic, and environmental influences. Therefore, the statement that women are more commonly affected fits best. Choices claiming men, equal distribution, or neither do not match the observed sex distribution.

MS shows a female predominance in who is affected. Women are affected more often than men, with incidence and prevalence higher in women across many populations, commonly about 2 to 3 times more frequent. The typical onset is in young adulthood, roughly between the 20s and 40s. This pattern likely reflects autoimmune factors that are more active in women, along with hormonal, genetic, and environmental influences. Therefore, the statement that women are more commonly affected fits best. Choices claiming men, equal distribution, or neither do not match the observed sex distribution.