Its cause? Yup. Pants that are too tight. (The researcher says there's as much as a 3-inch difference between waist size and waistband.) Funny, but the same thing happens with men and shirt size. Two-thirds of men purchase shirts with a neck size that's too small, so they get headaches, changes in vision, and even changes in blood flow to and from the brain.
Find out more about this book:YOU: On A Diet Revised Edition: The Owner's Manual for Waist Management