sex differences sex differences
Stories About
sex differences
Having more than one child is associated with a lower risk of Alzheimer's, research finds, as is starting menstruation earlier in life than average and menopause later. Ronnie Kaufman/Blend Images/Getty Images hide caption
Hormone Levels Likely Influence A Woman's Risk Of Alzheimer's, But How?
Boys are more likely to have asthma than girls, but that flips after puberty. Researchers suspect that sex hormones are a factor. Westend61/Getty Images hide caption