Since the prblem in not because of heredity . In my opinion in might be due to lack of nutrition(protein and iron) im taking in , dandruff and water intake quality. What are your suggestion for the betterment ? I'm 22 years old and moths ago used to have very very healthy and dense hair. Right now i can just count the number of hair i have on my head . Plus when the hair is wet or oiled or in sunlight scalp portions can easily be seen . Does the hair grow back ? Will the density be the same ?