Posts Tagged ‘diabetes mellitus’

Just Eating Healthier Trims Diabetes Risk

Improve your overall diet quality and you will lower your risk of type 2 diabetes mellitus, independent of adopting other healthful behaviors, including increased physical activity and body weight loss, according to the results of a new study.

In an analysis of 3 large cohort studies of men and women by researchers at the Harvard School of Public Health, those who improved their diet quality index scores by 10 percent over 4 years reduced their risk for type 2 diabetes by about 20% compared to those who made no changes to their diets.

“We found that diet was indeed associated with diabetes independent of weight loss and increased physical activity,” said lead author Sylvia Ley, PhD, RD, a post-doctoral fellow at the Harvard School of Public Health, at the American Diabetes Association’s 74th Scientific Sessions®.

“If you improve other lifestyle factors you reduce your risk for type 2 diabetes even more, but improving diet quality alone has significant benefits.”

She noted that it is often difficult for people to maintain a calorie-restricted diet for a long time.

“We want them to know that if they can improve the overall quality of what they eat – consume less red meat and sugar-sweetened beverages, and more fruits, vegetables and whole grains – they are going to improve their health and reduce their risk for diabetes,” Dr Ley said.

Lifestyle changes, including individually tailored, macronutrient composition focused, calorie-restricted interventions, can prevent or delay type 2 diabetes among those at high risk, according to randomized controlled trials.

However, it is unclear whether improving overall diet quality by itself is associated with reduced risk of diabetes among healthy adults.

DIET QUALITY CHANGES LOWER RISK

Dr. Ley and colleagues investigated the association between diet quality changes during a 4-year period and subsequent 4-year type 2 diabetes risk, and simultaneous changes in multiple lifestyle factors on that risk (Abstract 74-OR).

They prospectively followed more than 148,000 participants without diabetes at baseline in the Nurses’ Health Study (1986-2006), Nurses’ Health Study II (1991-2011), and Health Professionals Follow-up Study (1986-2010).

The Alternative Healthy Eating Index score was used to assess diet quality.

Associations between changes in diet quality, physical activity, and body weight and diabetes risk were evaluated simultaneously.

The researchers documented more than 9,000 incident cases of type 2 diabetes during the more than 2.3 million person-year follow-up.

Greater than 10% decrease in diet quality scores over 4 years was associated with higher subsequent diabetes risk with multiple adjustments, while at least 10% improvement in dietary scores was associated with lower risk, Dr Ley said during her presentation at the ADA meeting.

When simultaneous relationships among 4-year changes in diet quality, physical activity, and body weight were assessed, improvement in each behavioral factor was independently associated with lower incident diabetes.

“Regardless of where participants started, improving diet quality was beneficial for all,” she noted.