A. Alcoholic beverages are high in calories and low in nutrients. Heavy drinkers, especially those who also smoke, frequently develop nutritional deficiencies. b. They also develop more serious diseases such as cirrhosis of the liver and certain types of cancer. c. This is partly true because of the loss of appetite, poor food intake, and impaired absorption of nutrients. d. One or two standard-sized drinks per day appear to cause no harm in normal, healthy, non-pregnant adults. e. Some medical specialists believe that moderate doses of alcohol help prevent heart disease by preventing arteries from becoming clogged with fatty deposits. Which sentence best expresses the author’s unstated main idea?