Having done some research into herbs, garlic is also an antibiotic, so that any infection, that a person might have will create problems for the liver, which must clean out the toxins produced.
That is why many herbal antibiotics are good for the liver, as is fiber, which cleans out the intestinal system of infections and or toxins.
A diseased liver, (the liver also secretes enzymes for digestion), a diseased liver will or may result in problems with digestion, that can lead to over eating, because the body does not process food properly, leading to fat build up, high blood pressure, and ultimately heart disease. Garlic and other similar herbs are very important.
Also the best herbs to help the LIVER are Milk Thistle and Dandelions, either the green salad or the root.
Here is a link to wikipedia and the liver. http://en.wikipedia.org/wiki/Liver#Symptoms_of_a_diseased_liver
Caesar Squitti
Herbal treatments for intestinal problems, liver, heart.... http://www.abeautifuldifference.com/webdoc.535.html