A team of British and Dutch researchers has found that higher intakes of dietary magnesium are associated with a lower risk of colorectal adenomas, a type of precancerous polyp.  The researchers compared magnesium intake in 768 cases and 709 polyp-free men and women.  the inverse relationship between magnesium and adenomas was found in people who were overweight and 55 years of age or older.  For every 100 mg of daily magnesium intake, subjects had a 13 percent lower risk of adenomas.

Here's a list of foods that contain magnesium:

Green Vegetables such as spinach, broccoli and peas.  A cup one serving can provide as much as 150 mg of magnesium.

Whole Grains such as whole wheat bread and whole grain cereals are another way to add at least 24 mg of magnesium to the body.

Fish such as halibut can add as much as 170 mg of magnesium per serving.

Beans such as white beans, black beans, pinto beans and lima beans are excellent ways to add fiber and magnesium to your diet.  A one cup serving contains over 100 mg of magnesium.

Tomato Paste is another simple way to magnesium to the diet.  Cook vegetables and meats in it.  One cup contains over 130 mg of magnesium.