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.
With a drug like Depo-Provera, vaginal bleeding is not only a common side effect but one that is expected to occur in one of every four women. Sadly, there is no way to predict who will experience these side effects or how severe they might be. For most women, symptoms of bleeding will resolve within six months.