Only 20 when i started balding, & by 22 i had like a crown, i have no family history of hair loss my dad in 50 have full set, no hormone prb what to do?

Male Pattern : The male pattern baldness (mpb) form of androgenetic alopecia accounts for more than 95% of hair loss in men. By age 35, two-thirds of american men will have some degree of appreciable hair loss and by age 50 approximately 85% of men have significantly thinning hair. About 25% of men who suffer from male pattern baldness begin the process before they reach 21. Treat with propecia (finasteride).