Yes there is a good chance that a major crash dieting phase could cause temporary hair loss, by causing your body to go into a mode of stress that makes it conserve nutrients for essential body functions (hair growth is not one of these). By resuming a normal diet while compensating by increasing your consumption of nutrients for hair growth you can reverse this process. However you should follow some steps to increase your body’s ‘prostaglandins’ to normalize your hormonal balance. Going through an extreme crash diet can change your body’s metabolic rate and hormonal balance. It could even effect your liver, depending on what you were eating during the diet.

It’s worth starting a plan to get your body into optimal health using a few simple superfoods and a well balanced nutrition programme. This is all outlined in the nutrition chapter of my eBook.