They were only forbidden to partake of the Tree of Knowledge of Good and Evil. Some of the best information we have on the Tree of Life comes from I Nephi 11. Nephi is trying to obtain the interpretation of the dream his father had.
Factors that increase the risk of prostate cancer include: older age, a family history of the disease, and race. About 99% of cases occur in those over the age of 50. Having a first-degree relative with the disease increases the risk two to threefold.
What Causes Liver Cancer? Primary liver cancer (hepatocellular carcinoma) tends to occur in livers damaged by birth defects, alcohol abuse, or chronic infection with diseases such as hepatitis B and C, hemochromatosis (a hereditary disease associated with too much iron in the liver), and cirrhosis.