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.
In 2004, data submitted to the FDA by Pfizer (which now owns Depo) showed that Depo did, in fact, have a harmful effect on bone density for some women, and the FDA changed the drug label to reflect these risks. Women who use Depo-Provera Contraceptive Injection may lose significant bone mineral density.