How could a change in diet affect your menstrual cycle?

Answer 1

The consumption of soy can change your mentral period. It has a natural form of estrogen in it and just 2 cups a day is like taking birth control pills. Soy can actually change your memstral cycle.

Also, I have been told, read and experienced that if you have a change in diet or excercise (meaning a sudden increase in excercise) that can cause your period to be late. It happened to me twice. I was a week late both times, but not pregnant.