The liver manufactures by the liver bile, an extremely important substance in the absorption of fatty acids and fat-soluble vitamins. Bile produced is either secreted into the small intestine or gallbladder. Bile also plays an important role in making the stool soft by promoting the incorporation into the stool. Without enough bile, the stool can become quite hard and difficult to pass.
The biliary system includes the gallbladder and bile ducts inside and outside the liver. It is also known as the biliary, or bile, tract. http://www.liverandpancreas.co.uk/the-biliary-system.php
Like pancreatic enzymes, bile also serves to keep small intestine free from microorganisms. Each day about one quart of bile is secreted into the small intestine. About 99% of what is excreted in the bile is reabsorbed in people who consume a low fiber diet.
When additional bile acid are ingested, usually as ursodeoxycholic acid ox bile salts, they are known to increase the output of bile and help promote a mild laxative effect. Another method of increasing the output of bile(a choleretic effect) is using herbal compounds such as milk thistle or artichoke extract.
The colon is about five feet long and functions in the absorption of water, electrolytes (salts), and, in limited amounts, some of the final products of digestion. The large intestine also provides temporary storage for waste products, which serve as a medium for bacteria. The health of the colon is largely determined by the types of foods that are eaten. In particular, dietary fiber is of critical importance in maintaining the health of the colon.
As important as proper digestion is effective elimination of waste products. A bowel movement every 12 to 24 hours is critical to good. This frequency of elimination requires eating foods high in dietary fiber. Such a diet is rich in fruits, vegetables, whole grains legumes, nuts, and seeds. A high fiber diet increases both the quantity of bowel movement, decreases the transit time of stools, decreases the absorption of toxins from the stool, and appears to be a preventive factor in several diseases that affect the colon, including constipation, colon cancer, diverticulitis, hemorrhoids, and irritable bowel syndrome.