My mum's dad is 85 years old and still has a full head of hair. He didn't go grey until he was well into his 60s despite being blonde. I take after him in most ways (I'm like a taller younger version of him) so I am hoping!
However, I have a fall back if I do go bald: hair transplants. There is plenty of it elsewhere to go on my scalp. Despite all the men in my family on BOTH sides being pretty much devoid of body hair, I have to stay away from the zoo in case they think a gorilla has escaped.
Well, that is a slight exaggeration, I'm not one of those REALLY hairy missing-link blokes you see in a posing pouch on a Spanish beach, but enough that female friends have asked to stroke my chest to see what it feels like
I've not heard about the testosterone-baldness link, but it makes sense: you don't see many bald women, and those who are bald generally suffer from a particular condition. Acne is definitely caused by an excess of testosterone (whatever you do, don't tell your teenage daughters that
).
Er, no! A small amount is all you need for a healthy interest in the opposite sex. Women have it too by the way. The much larger amount that we men carry around is only needed for sperm production - and for going bald!
I read somewhere that too much testosterone can have the opposite effect as your body increases female hormone production to counter the testosterone (all humans male or female have testosterone, oestrogen and progesterone... just in different amounts). Apparently body builders who inject testosterone experience a shrinking penis. Still, as it is produced in the testes then it makes sense that a higher testosterone level means you have bigger nads, hence able to produce more to carry on your lineage. The whole mammalian reproductive system is based on quantity-over-quality. You only need 1 sperm to fertilise one egg, yet we throw billions at it.