(The Best Years in Life) In some cases loosing one's hair is a factor of genetics; however, there are many other reasons you may have hair loss including, thyroid disease, nutritional deficiencies, hormonal problems and poor circulation to your scalp. Many of these causes can be treated with drugs; however, pharmaceutical drugs often cause nasty side effects. Nutrition, herbs and other natural substances can slow hair loss and in some instances, help regrow hair. Many cases of nutritional deficiencies are overcome when an individual begins a regimen of vitamin therapy to stop hair loss. Speak to your natural health practitioner if you intend to dramatically change your diet or add large doses of vitamins. Read more.