Vegans eat only food of plant origin. In addition, vegan diets, particularly those of children, require care to insure adequacy of vitamin D and calcium, which most Americans obtain from milk products. It is important for people of all ages to maintain a healthy weight. People who are overweight increase their risk for high blood pressure, heart disease, diabetes, breathing problems, and other illnesses. To maintain a healthy body weight, people must balance the amount of calories in the foods and drinks they consume with the amount of calories the body uses.
Physical activity is an important way to use food energy.
Extreme thinness is also unhealthy. People who eat very little or diet excessively may not get the calories and other nutrients they need for good health. Aerobic exercise, such as walking, running, swimming, inline skating, and playing soccer, burns fat and calories. Eat less fat and fewer high-fat foods. Eat smaller portions and limit second helpings of foods high in fat and calories.