8. Breasts get fat 乳房也会“增肥”
In your 20s, your boobs are made up of fat, milk glands and collagen -- the connective tissue that keeps them firm. But as you age, the glands and collagen shrink and are replaced by more and more fat. Instead of making your bra size go up, however, the added flab can send breasts down, closer to the floor, if you catch our drift.
20多岁的女性乳房主要由脂肪、乳腺及胶原蛋白构成。(胶原蛋白的主要生理机能是做为结缔组织的粘合物质,为相关结构提供稳定而有力的支撑,乳房的坚挺就要归功于它们。)随着年龄增长,乳腺和胶原蛋白萎缩,被越多越多的脂肪取代。但乳房并不会因此增大,反而会松弛下垂,似乎再也无法抗拒地心引力。