U. S. Buddha Luo Lida State University researchers found that taking oral vitamin E and exercise a combination of methods, which can effectively slow down aging.

美国佛罗利达州大学的研究人员发现，采取口服维生素E和锻炼相结合的方法，可有效地减缓衰老。

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The U. S. Institute of Medicine is involved in a study that will likely result in an increase in the recommended daily intake of vitamin D.

美国医学研究所最近进行了一项研究，可能会增加维生素D的每日摄入量。

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Up to 40% of the U. S. population is vitamin D deficient, and certain groups, such as the elderly, have even higher rates.

在美国有高达40%的人口缺乏维生素D，对某些特定族群而言，比方说老人，缺乏的比率更高。

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The Institute of Medicine, which advises the U.S.government on health, is expected to update its recommended amount of vitamin D by September.

VOA: standard.2010.05.28

"Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of vitamin D deficiency in our population, not only in the U.S.,but worldwide" Vitamin D helps our bodies absorb calcium and helps form and maintain strong bones.

VOA: standard.2010.05.28

In the U.S. vitamin D levels are usually reported with a different measure using nanograms per milliliter.

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The Selenium and Vitamin E Cancer Prevention Trial involving 35, 000 U.S. and Canadian men was halted in October when researchers determined that selenium was not protecting the men from prostate cancer and may have been causing diabetes in some of them.

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In winter, experts say, people in the northern half of the U.S. don't receive enough UVB rays from the sun to make vitamin D, regardless of whether they use sunscreen.

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