Meer en meer mensen krijgen te weinig vitamine D*
Volgens een recent Amerikaans rapport blijkt in 10 jaar tijde het aantal mensen met voldoende
vitamine D gehalveerd te zijn. Inmiddels heeft 70% van de blanke, 97% van de “zwarte” en 90% van de gekleurde Amerikanen een tekort (<30 ng/ml) aan vitamine D. Vermoedelijk komt dat omdat mensen steeds meer tijd binnenshuis doorbrengen en in de zon zich insmeren met crèmes met een hoge beschermingsfactor. Aanvulling met minimaal 25 mcg/dag zal wenselijk zijn.
D missing link in too many diets: study
Report: Too much time indoors unhealthy, reduces key vitamin
We're not getting enough vitamin D, according to a new report.
Blood levels of vitamin D in Americans have plunged in recent years, researchers say -- probably because people spend more time indoors, get too little sun and use a lot of high-protection sunscreen.
Vitamin D in Americans have plunged in recent years, probably because people spend more time indoors, get too little sun and use a lot of high-protection sunscreen, researchers
say.
The number of people who get adequate amounts of vitamin D fell by almost half in the years 2001 to 2004 from 1988 to 1994, researchers from Harvard and the University of Colorado, Denver, reported Monday in the Archives of Internal Medicine -- a finding that a government health official, Mary Frances Picciano, called "exaggerated."
By getting less sun and using more sunblock, people could be trading a lower risk of skin cancer for a higher risk of osteoporosis and fractures, heart disease, infections and some cancers, said Dr. Adit Ginde, who led the study.
People get vitamin D from the sun, from vitamin supplements and from milk and other foods with added vitamins.
The study found that 70 percent of whites, 97 percent of blacks and 90 percent of Hispanics in the United States had less than 30 nanograms of vitamin D per milliliter of blood -- the level considered adequate for health -- during the years 2001 to 2004, based on data gathered by the U.S. National Center for Health Statistics.
Ginde and Keri Gans, a dietitian for the American Dietetic Association, suggested that people consult their own doctors, get their blood levels tested and consider taking supplements of 1,000 international units (IUs) a day of vitamin D.
(April
2009)
