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.
After a year of use, many women stop having periods. Lack of a period becomes increasingly common with longer use. Other side effects of Depo Provera can include headaches, nervousness, mood changes, bloating, hot flashes, decreased interest in sex, breast tenderness, acne, hair loss, and back ache.