The same physical changes happen to men as happen to women. If you look at a 20 year old man and woman and then at a 70 year old man and woman, it's apparent. You don't see many 50 year old men able to compete with 20 year old men in sports which require testosterone.
Some, not all. For example, osteoporosis occurs more frequently in postmenopausal women than in men the same age.
If you look at a 20 year old man and woman and then at a 70 year old man and woman, it's apparent.
It is apparent they are older. Not apparent is that the changes of aging are due to hormonal changes.
You don't see many 50 year old men able to compete with 20 year old men in sports which require testosterone.
What is the evidence they "require testosterone? For example, young women athletes, particularly distance runners with minimal body fat are capable of great athletic performances, but have very low level, in many cases, of estrogen and have no menstrual cycle because of that...almost a menopausal picture.