As a dermatologist, I know, its very hard to deal with hair loss, especially if you are a lady and facing this. It takes a toll on you both physically and mentally. My own grandmother has suffered through this and I know it very well.
So, your question shows that you are on the right path as you are talking about prevention. But, what is most important is you should know the exact cause of hair loss & then & then prevention strategy will work out. Other wise it will be darting in dark. So, I am sharing you the probable list causes:
1. Nutritional Deficiencies: If you are a teenager and on kind of some hardships.
2. Diseases like PCOS, PCOD.
3. Sometimes, Hereditary hair loss or Genetic Hair loss
4. Hormonal Imbalance.
I am sharing my blog for you: http://www.hairmdindia.com/treatment/Female-Hair-Loss/questions/how-to-stop-hair-fall-in-girls-and-how-to-deal-with-avoiding-this-major-problem
So, few I have mentioned above and it is better to diagnose with qualified dermatologist near you to have a good assessment of your cause and getting is treated right. Yes, hair loss treatment and complete recovery is possible. Have healthy and shiny hairs!
Dr. Dhananjay Chavan.