Suggest Treatment To Control Hair Loss

assalam o alikum dr i m ahmed from Pakistan and 23 years old.i have been losing my hair since last 5 years and almost loss 60-65 of my hair.my hair turned to oily if i don't wash them in 2-3 days.pls tell me how to control my hair loss?can i regrow my hair?which shampoo i should use?and what care i should take in my eating habit coz i mostly used to like vegetables.