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Whole Grains Versus Refined

Charlyn Fargo on

I often counsel patients that it's important to make the simple switch from refined grains to whole grains. That can be as easy as choosing brown rice over white, whole-wheat bread over white and whole-wheat pasta over regular. Small changes like these can make a huge difference later in life.

It's a recommendation from the latest Dietary Guidelines for Americans -- make half your grains whole. Whole grains include barley, quinoa, bulgur, whole-grain crackers and brown rice.

Now a study by Tufts University researchers finds that switching to whole grains also improves heart health. Researchers investigated why that's true. They specifically looked at fasting blood glucose levels, waist circumference, systolic blood pressure and blood triglyceride concentration.

The study analyzed information on the diets, health and lifestyles of over 3,000 participants in the Framingham Offspring cohort study over 18 years. The individuals were 55 years old (on average) when the project started and had an average body mass index of 27.

Those who ate more whole grains had smaller increases in fasting glucose, waist circumference and systolic blood pressure compared to those who ate fewer whole grains. Those who ate more refined grains (white bread, white rice, refined grain crackers, packaged cookies and cakes) had greater increases in waist circumference and less decline in triglycerides.

Try adding some whole-wheat flour to baked goods or adding barley to your vegetable soup. Adding quinoa to a salad is a tasty way to add whole grains to your diet.

 

It's never too late to make the switch. Even middle-aged adults can benefit from switching to whole grains. Look on the label for the Whole Grain Stamp or choose the breads, crackers and pasta with the most fiber listed on the nutritional label. Making that simple change may just help keep your blood glucose more stable over time and thereby reduce the risk of diabetes and heart disease.

Q and A

Q: What are net carbs? Sometimes I see them on Nutrition Facts labels.

A: Some carbohydrates, such as fiber and sugar alcohols, are not fully broken down by the body and therefore provide few calories and little or no rise in blood sugar levels. Net carbs refer to the amount of fully digestible carbohydrate in a food. It is calculated by subtracting grams of dietary fiber and half the grams of any sugar alcohols from grams of total carbohydrate. Food manufacturers aren't required to list net carbs on the label -- only total carbohydrates, dietary fiber, sugars and added sugars. However, if they are listed, they can be helpful to someone following a lower carb diet or people with diabetes.

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