Dieting and frequent low blood sugar may cause headaches along with migraine in most people. Usually when a person starts with a new diet, a migraine may occur. A change of diet can result in fluctuations in blood sugars as well as vitamin levels.
It is important to drink as much water as possible when dieting, apart from consuming multivitamins. This will help get relief from unpleasant symptoms which may accompany a migraine attack following the diet.