When is the earliest men start losing their hair? Is it genetic?

It varies for each person bc everyone's genes are different.

My cousin lost his hair in high school.

Some men start losing their hair as early as high school. Yes, there are really people who lose it that early, I know of quite a few. I also know of people who are in their 70s who have barely lost any hair.

Yes, it’s dependent on your genetics. Everyone is different and there is nothing you can do about it.

many men come out of the birth canal bald

It might have started at that time when they added many other things in their diet.

its all genetic! I knew guys in high school who started balding and ik some ppl in college who are already completely bald but i also know people who are 30 and have full hair but balding runs in the family

when they growth,will lose their hair,not 100% genetic

You can start losing your hair in your teens. My stepbrother was definitely thin on top in his late teens. My hairdresser mentioned her son had no hair on the top of his head before he turned 20.

I had a college classmate who was bald on top at age 19. Many guys have noticeably thinning hair in their 20's and they've often shaved their heads in their 30s. Other guys have fairly thick hair most of their lives.

Yes it's 100% genetics. White men tend to go bald faster than any other race. Sad but true.