Last year, the Department of Health and Human Services released -- a year early -- the significant results of a study of diabetes prevention. Conducted at 27 medical centers among 3,000 high-risk patients, the study showed that even modest changes in habits cut the incidence of diabetes by half over three years. The study defined 'modest changes' as eating less fat by adding more low fat choices like yogurt to the diet, exercising two and one-half hours a week and losing on average just 7 percent of body weight.

Diet and Exercise Classes Were Important

The study participants most likely to avoid diabetes were those who attended diet and exercise classes and who received follow-up counseling to help them maintain a healthier lifestyle.

Those attending classes learned how to read labels and eat low-fat meals. They also learned what makes up a portion of different foods as defined by the USDA's Food Guide. Many did not know what a three-ounce serving of meat looks like (a deck of cards). Also, instead of recommending students eliminate high-calorie foods they enjoyed, the nutrition counselors advised they eat these foods less often and in smaller amounts.

Lifestyle Changes More Effective than Drugs

The study showed that diet, exercise and weight loss were nearly twice as effective in preventing the onset of diabetes as a commonly prescribed drug for people who are having trouble regulating their blood sugar, especially in people over the age of 60.

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