Medications you may take will show up in your hair cells. If you are on a strict diet, which may eliminate essential nutrients, you may experience hair loss.
Severe stress can cause temporary hair loss.
Relaxation and regular scalp massages can minimize the effects of stress. It is just good ol' fashioned common sense to eat a balanced diet to keep your hair and body in good condition and looking more beautiful. Serious illness will deplete the health and appearance of your hair. The body conserves vitamins for major organs. X-ray therapy can cause hair to fall out.