not necessarily. My brother is 23 and he has been losing his hair since 19

http://www.hairlossbuddy.com/6/alcohol/
this article says that there is a connection,
but it could also be genetics.
my friend started balding at 19 years old
(also if your son’s alcoholic, you might want to consider encouraging him to attend an AA meeting, it won’t “cure” him, but it might show him what’s in store for him if he doesn’t get a handle on things)

Absolutely- people who drink alcohol and lots of it deplete their bodies of the necessary vitamins and minerals. Also, people who drink a lot sometimes do not eat- causing malnourishment. I would say that the alcohol is probably a contributing factor, especially if he has a problem. However, some genetics of male hair loss may also have a role in his hair loss.

Alcohol and stress might have a connection with hair-loss. I recommend him to get a prescription for Propecia, it’s the only FDA proven medication to help stop and regrow hair. I’ve been taking it for about 4 years now and I grew some and kept most of my hair. If he gets a prescription is cheaper to buy it on line or to use the generic version Proscar which is prescribed to stop prostate enlargement and prevents prostate cancer too. Best of luck!