• The medical experts agreed with doctors who say that people who know they lack a vitamin should take vitamin supplements.

    VOA: special.2009.04.21

  • How much Vitamin A should they have?

    他们应该摄入多少维生素A

    耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

  • Now the fact that people were so reliant on certain foods led to deficiencies of certain nutrients, so people that were dependent on a rice based diet tended to have problems with deficiencies in protein, Vitamin A, and thiamine.

    人们过于依赖某些特定的食物,导致了某些营养元素的匮乏,因此,以米饭为主食的人,很可能缺少蛋白质,维生素A和维生素B1

    耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

  • Each year an estimated two hundred fifty thousand to half a million children go blind from vitamin A deficiency.

    VOA: special.2011.03.01

  • Several years later, researchers discovered the exact cause of pellagra: a lack of the B vitamin known as niacin.

    VOA: special.2009.01.27

  • Several studies have not been able to show that taking vitamin supplements in addition to a balanced diet helps to prevent disease.

    VOA: special.2010.09.14

  • That is,it is better to eat vitamin-rich foods to prevent disease instead of eating them to cure a disease after it has developed.

    VOA: special.2009.04.21

  • They taste good. And they contain a lot of carotene, which the body makes into vitamin A.

    VOA: special.2009.02.24

  • Ultraviolet light from the sun changes a substance in the skin into vitamin D.

    VOA: special.2009.04.21

  • People who do not get enough vitamin A cannot see well in darkness.

    VOA: special.2009.04.21

  • Vitamin A helps prevent skin and other tissues from becoming dry.

    VOA: special.2009.04.21

  • Cabbage is a good source of vitamin C and other nutrients.

    VOA: special.2009.03.03

  • Vitamin A is found in fish liver oil.

    VOA: special.2009.04.21

  • "There have been some studies showing that if you give pregnant women 4,000 units of vitamin D a day, their rates of complications in pregnancy are much decreased."

    VOA: standard.2010.05.28

  • Doctors rarely see these conditions. But studies have linked vitamin D deficiency to a number of serious health problems, including heart disease, several types of cancer, osteoporosis,diabetes, Alzheimer's disease and some autoimmune disorders.

    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

  • "What's very interesting about vitamin D is that it's involved all throughout the body, and it's involved on a local level, so you can have vitamin D active in the breasts, in the prostate,in the colon, and it's thought that the locally-acting vitamin D is helping to protect the body against these cancers, regulating how cells grow and how cells die."

    VOA: standard.2010.05.28

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