I’m 19 and the doc said I am losing hair. Would eating healthier and excersizing postpone or stop hair loss? I was drinking and smoking quite heavily on weekends, could that have been part of the problem?

And also, are there certain vitamins I should focus on getting in my system to reduce the loss? Are there any longterm products I can take to prevent any future hair loss.

I’m looking for pills that work, Are there any?

I know that’s alot of questions, but any help would be appreciated. Thanks.