Name a commonly under consumed nutrient. Then describe a long-term consequence of poor diet. Identify two additional aspects of an unhealthful lifestyle that do not involve nutrition. Explain the long-term consequences of each.

How is the central idea developed further? (a) the author elaborates on the treatments for allergies in adults and how they work. (b) the author quotes the reactions of experts and the methods used to conduct the study. (c) the author compares the different rates of food allergies shown in children and adults. (d) the author indicates the limitations of the study because of differences in health care.