Women usually store fat around the hips, buttocks, and abdomen in order to protect their reproductive organs and their babies during pregnancy. When men gain weight, it tends to go to their stomachs.Although testosterone is often thought of as a male hormone, the female body makes it too, just in smaller quantities. Women need it for healthy bones, among other things.Women have a stronger immune system than men because of the female hormone, estrogen.That might be one of the reasons why they also generally live longer than men.