In the case of meat consumption and colon cancer, additional evidence has tended to support the idea that eating red meat (but not poultry or fish ) contributes to colon cancer, perhaps through the large amount of saturated fat it contains. (The term saturated refers to a fat molecule in which all carbon atoms are bound to the maximum number of hydrogen atom.) Diet rich in saturated fat have frequently (although not always) been associated with increased rates of colon cancer in human epidemiological studies, Animal studies have confirmed that dietary fat is capable of increasing colon cancer rates, but the way in which fat increased cancer risk is not well understood and may involve indirect mechanisms. For example, high-fat diets are known to cause the liver to secrete large amounts of bile acids into the intestines. One of these bile acids, lithocholic acid, can produce DNA damage and has been found to induce colon cancer when injected into animals