Today's NewsBites

Grains and legumes will play starring roles in new product introductions this year…

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Contradicting other research on calorie restriction and longevity, a new National Institutes on Aging study reports that rhesus monkeys fed 30% fewer calories were healthier but didn’t live any longer than a control group. The monkeys — long-lived primates similar to humans — had been followed since 1987. Those on a restricted diet did have a lower incidence of cardiovascular disease, cancer and diabetes. But that didn’t translate into longer lifespans. Researchers in a similar study at the Wisconsin National Primate Center, who have reported longevity benefits linked to calorie restriction, pointed out potentially key differences between the studies: The control group in the NIA study was given vitamin and mineral supplements and fed a limited, though higher-calorie diet. In the Wisconsin experiment, monkeys in the control group were allowed free access to food, which those researchers argued more closely resembles actual human lifestyles. — Nature…

Current Articles

Study spotlights downsides of “too much of a good thing.”…

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Too much iron may contribute to age-related brain diseases.…

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New study finds probiotics protect against antibiotics complications.…

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Ask Tufts Experts

 

Is it better to eat the darker meat of fish like salmon that’s found near the skin because it’s higher in omega-3s, or to avoid it because this part of the fish also contains more toxins? What about eating salmon skin itself?

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V8 juice lists 10 grams for carbohydrates, of which 8 grams are sugars. Is that too much sugar for a healthful drink?

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Sarah L Booth, PhD, director of Tufts’ HNRCA Vitamin K Laboratory, answers, “Blood thinners are among the top 15 drugs prescribed in this country, and adverse drug events for these drugs account for some staggering numbers among the elderly.” People who have been prescribed warfarin, the most common such anticoagulant medication, need to monitor their vitamin K intake because warfarin works by affecting the body’s vitamin K. But Booth goes on, “Although vitamin K is found in numerous green fruits and vegetables, one would have to eat very large amounts to achieve high intakes. Examples would be green peas and kiwi fruits. Most of the vitamin K is in the peel of fruits, such as apples. One popular food item that is appearing more often on the shelves that may be of concern is some of the green seaweed, especially if consumed in large amounts.”

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High-protein diets make kidneys work harder—an issue for the more than 20 million Americans who have chronic kidney disease but don’t know it.

Tufts University Health & Nutrition Letter

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