> It is amazing how much more people care about their hair and skin in comparison to, say, their blood vessels when it comes to aging. I'm thinking that the st

> It is amazing how much more people care about their hair and skin in comparison to, say, their blood vessels when it comes to aging. I'm thinking that the state of your blood vessels isn't something that has been highly visible to others in the past, whereas your hair and skin have been visible, if imperfect, indications of your health and youth. Signalling health and youth to others has been a good strategy for your genes to use, to get additional copies of themselves into circulation. Thoughts?