For women to lose weight and thin their breasts first, women’s fat distribution is not the same as men’s, it is affected by women’s estrogen. Women’s fat is mainly distributed in the chest, hips and abdomen, while women’s hip fat is composed of both adipose tissue and muscle tissue, and women’s chest is more adipose tissue and mammary glands and ducts. Women lose weight in the process of losing weight, the main thing that is lost is fat tissue, and the chest distributed a large amount of fat tissue, if the body weight loss, chest fat proportionally speaking, the decline is particularly obvious. Women also have a lot of muscle in their buttock tissue, so the breasts look especially thin because of the high percentage of fat in the breasts.