Some more tips:
* get or give yourself as many head massages as possible to encourage blood flow to the head.
* research chemical hair growth products like 'regain' before using them - I've heard some people complain that they have made their hair loss worse.
* use natural shampoos.
Male patterned baldness is linked to high levels of testosterone, so if your hair doesn't grow back at least you can feel manly about it!