About 3 weeks ago, I went on a diet. I started eating less and healthier. I am eating granola bars and coffee for breakfast, a salad or a grilled chicken sandwich (with wheat bread) for lunch and either grilled chicken or fish and vegetables for dinner. I am only drinking water. Well, about the same time that I started this diet, my hair on my head started falling out. It is filling up the drain in the shower in one day. I can run my fingers through my hair and have about 5 hairs on my hand every time I do it. Is it the diet that is doing this? I don't want to start eating bad again, but I also do not want to lose my hair. What can I do to stop it falling out?