A study reported in the Archives of Internal Medicine reported that total calcium intake is related to the development of cancer, especially in women. They followed an elderly population for years and determined their total intake of calcium from their diet and supplementation. Among women, the overall cancer risk of cancer decreased as the total intake of calcium increased up to 1300 mg/day. Gastrointestinal cancers decreased in both men and women who had the highest intake of calcium. Women saw a decrease of 23% and men a decrease of 16% of gastrointestinal cancers. The risk was especially low for colorectal cancers.