Talk to Dermatologist on Hair Thinning Due To Water Or Vitamin/mineral Deficiencies.

When I was 17, moved to a different city for college. due to hard water my hair got too weak in a span of 1-2 months. then started using filtered water for washing hair the hair returned to their normal health. but my hairline had receded a bit. And when I moved to a different city to for university (age 19) due to bad diet my hair thinning increased a lot in just 3-4 months and I was left with thin and weak hair on my head. recently I was diagnosed with anemia. I hope there is a solution to this.