Health: For Smarter Nutrition (02)
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This site says that a recent study conducted Brigham and Women’s Hospital and Harvard Medical School found that previous recommendations to limit dairy products in an effort to reduce the risk of kidney stones were not accurate. There were more than 90,000 women in the study, which showed "that women with the highest intake of dietary calcium had the lowest risk of kidney stones." Researchers say that calcium neutralizes the absorption of oxalate, a substance that is present in foods such as spinach and beets which has been linked to kidney stone formation. It includes a list of foods to avoid, which include peanut oil, soft drinks, tea, cocoa, green peppers, beans and beets.
This 2004 article says that a renowned researcher estimates that 70 percent of colon cancers could be prevented with just moderate changes in diet and lifestyle. One prime suspect now is insulin resistance. In this condition, higher levels of insulin circulate because the body is less responsive to it. Insulin and related growth factors seem to change cell processes in ways that promote the development of cancer. The article also says that consuming enough calcium is the latest approach to lower the risk of colon cancer. It cites a recent study looked at the recurrence of colon polyps, which are noncancerous growths that have the ability to turn into cancer. Polyp recurrence was 29 percent lower with a higher consumption of calcium and vitamin D, the article says.
This is an article about the 1999 study by researchers that taking calcium supplements can reduce polyp recurrence. Dr. John A. Baron, professor of medicine and of community and family medicine at Dartmouth Medical School, says here that adenomas or polyps may develop into colorectal cancer. Less than one year into the study, we saw positive results from calcium - fewer adenomas and so, less potential for cancer. The effects of taking calcium supplements and eating calcium rich foods was evident here, and the focus of future studies since then.
Certain conditions can cause too much calcium to be absorbed in the body, or too much to be passed into the kidneys. When there is too much calcium in the urine, which is medically known as hypercalciuria. This site gives food sources of calcium, such as gruyere cheese, yogurt, pizza, milk, buttermilk, American cheese, ricotta cheese, broccoli, instant oatmeal and instant dry milk. This site discusses special dietary considerations, such as fluid intake; calcium; oxalic acid or oxalate; sugar, sodium and animal protein; insoluble fiber; and Vitamin C.
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