The ancient Maya processed their corn by boiling it with snail shells or with white lime. The process, known today as nixtamalization, made the corn's niacin available.
Depo-Provera can cause irregular bleeding and other side effects. Irregular bleeding The most common side effect of the birth control shot is irregular bleeding.
Among various benefits, Depo-Provera: 1  Doesn't require daily attention. 2  Eliminates the need to interrupt sex for contraception. 3  Decreases menstrual cramps and pain.  Lessens menstrual blood flow, and in some cases stops 1  menstruation. Decreases the risk of endometrial cancer.