Besides the fact that they do not work in the long run, theres another good reason to avoid crash diets. Poor dieting habits, particularly those that are changed suddenly, can lead to significant hair loss. If you are wanting to lose weight, make certain that you maintain sufficient quantities of protein-rich foods in your diet. Keratin, the structural protein of hair, requires adequate levels of nutrients that are derived from food sources to sustain and promote a healthy head of hair. Good sources of protein include lean meats and fish. These foods are believed to be of benefit in sustaining hormonal balance, which in turn help to regulate hair growth. Certain nuts and darker green vegetables may also have a positive impact on the condition of your hair. A sensible diet in combination with regular exercise is your best approach to achieving long-term weight loss.