The content of collagen in the skin determines whether the skin is smooth and delicate and determines whether human skin is young. Men and women of the same age contain the same amount of collagen in the skin, and women are better at maintaining and can improve skin collagen from daily maintenance. Content, despite this, women are more likely to age than men. Which of the following options explain the contradiction? ["Collagen in men's skin is reticular, while in women it is filamentous.", 'Women maintain smooth and delicate skin, and young and beautiful faces need a lot of collagen.', 'Only hoof food is rich in collagen, but it is difficult for the body to digest and absorb.', "Men's collagen is almost not consumed, while women's metabolism requires a lot of collagen."]