Consumption of alcoholic beverages increases the risk of cancer, particularly of the mouth, pharynx, larynx, and oesophagus. There is no doubt that drinking and smoking together have a synergistic, or combined, effect, and do contribute to the high incidence of some cancers. Diet and nutrition are not quite the same thing. Diet is all food and liquid you swallow. Some of this is used by the body and some goes to waste.
Food is used to build the body, keep it in working order, and provide energy.
Unfortunately, when chemically altering or arresting the course of one disease, these drugs can contribute to the development of other disease, including cancer. Some rare cancers are inherited, and usually appear at an early age. A number of rare hereditary disorders may predispose a person to cancer but the added action of one or more environmental factors is often needed for the cancer to develop. Cigarette smoking increases the risk of cancer of the lung more than any other site. Cigarette smoking also increases the risk of cancers of the larynx amd oesophagus.