Today, there is no reason a man should fear hair loss.
Think about it. Thinning hair is ugly. Combovers fool nobody, regardless of how big or how small the bald area is. The remaining hair turns gray and white over time. Why deal with it?
I realize there are multitudes of men in their early and mid twenties who dread the thoughts and fears that they will never meet women who will find them attractive without a full head of hair. That is so much crap. Those poor souls on HLT ought to grow a pair, get a set of clippers, shave it off, and hit the gym.
Three and a half years ago, I took my wife to Valentine's Day dinner and noticed a couple at a nearby table. She was a beautiful, pregnant lady. Her husband had a shaved head and a hoop earring. Apparently, she liked his look and it certainly worked for him!
Thinning hair should be looked at as an opportunity and as a part of becoming a mature man. You don't need hair to be successful in life. You do need a positive attitude. Sure, there are women who won't like a man with a bald head. Forget 'em.
Find one who likes it and you'll be set for life.
If you're 23, forget about a steady relationship for a while. Establish a career. Save some money. Buy a home. Have fun. Everything changes after marriage. It's a trade off and you have to be ready for it.