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.
Your health care provider may discourage use of Depo-Provera if you have: 1  Unexplained vaginal bleeding. 2  Breast cancer. 3  Liver disease.  Sensitivity to any components of Depo- 1 Provera. Risk factors for osteoporosis.  A history of depression.