Talk to Dermatologist on Hair Shedding

My hair have become so brittle and delicate. It's been around 2 years my hair r continuously shedding every day (approx 50-200) good thing is that roots regrow and hair density remains nearly constant. Sometimes it jitters me im taking it very serious why my hair are falling every day in a severe way. What is the reason? How it can be cured?May be nutrient problem, Anyone! suggest me a perfect solution.