While fruits and vegetables, especially beet, celery and apple juice, are the best for an ailing liver all types of fats put a strain on liver function. Eating foods high in preservatives and other chemicals makes the liver work harder because all chemicals that require breaking down to be eliminated from the body must go through the liver. Depending on what you mean by sick liver (Hep C, Cirrhosis, Cancer, Fatty Liver, Congested or Inflamed Liver) there are herbs and nutritional supplements available that can help you. Milk thistle in conjunction with dandelion, L-methionine, reduced glutathione, Vit C and N Acetyl Cysteine can be very helpful in bringing down elevated enzymes in the liver which is usually a sign of on going damage being done to the liver. Liv 52 or Livercare by Himalaya USA is very useful in liver concerns. Liv 52 and Livercare are the same product. Liv 52 is available through a naturopathic doctor and Livercare you can purchase in a health food store probably where you are. If you give your body the right kind of food, especially greens, and support your liver with things like milk thistle you should see a difference in a very short period of time. Call your local health food store and ask for Livercare or Tyler Lipotropic Complex. One thing, the liver does regenerate itself especially if you help it with good food, fresh water and liver loving supplements. Good luck.