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New Dietary Guidelines: What Are We Supposed to Eat?

May 22, 2015 By MedNews Leave a Comment

By Elena Carbone, Associate professor, Nutrition at University of Massachusetts Amherst

Since 1980, the Dietary Guidelines for Americans (DGA) have been providing information to Americans on how to make choices to reach a healthy weight, prevent disease and promote overall good health.

USDA Dietary Guidelines

US Department of Agriculture/Flickr, CC BY-ND

The Dietary Guidelines provide recommendations on food and physical activity for Americans aged two and older and are the driving force behind federal nutrition policy, education, outreach and food assistance programs, including school breakfast and lunch programs. The Guidelines are used by both the public and industry, and by a wide variety of nutrition educators, health professionals and government agencies. [Read more…]

Filed Under: Food Tagged With: Nutrition

Why Too Much Iron Can Be Dangerous

May 22, 2015 By MedNews 1 Comment

By Richard Stevens, Professor, School of Medicine at University of Connecticut

Iron is a most versatile element. It is essential to many of the enzymes that are the engines for life, and in mammals is also used to carry oxygen on hemoglobin in blood. Remember Popeye and his spinach: all that iron made him strong.

But the very quality that makes iron so useful also makes it dangerous. Iron can easily lose or gain one electron going from the ferrous (Fe++) to the ferric (Fe+++) state, back and forth indefinitely. This is how it carries oxygen, for example. [Read more…]

Filed Under: Food Tagged With: Iron, Iron Defficiency, Nutrition

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