Lack of vitamin D weakens young girls’ muscles

April 3, 2009


Another reason not to neglect eggs, particularly for teenage girls, is that new research in the USA and Germany has found that having insufficient vitamin D may cause weaker muscles.

A lack of the vitamin causes problems with calcium absorption, and can lead to bone weakness, fractures and osteoporosis as well as increasing the risk of cancer, heart disease and autoimmune disorders. Certainly it is known to impact our muscular and skeletal system and cause weakness, but what’s news it that it can also affect muscle power and force. The researchers tested their theory on nearly 100 girls between 12 and 14 at inner city schools and found that overall 75 percent of them had less than ideal levels of vitamin D, but were not showing any symptoms related to deficiency.

The girls were put through a variety of sport exercises, mainly involving jumping, and it was found that there was a direct correlation between vitamin D blood levels and the girls’ performance on the muscle strength tests. Recent studies suggest that as many as 55 percent of apparently healthy U.S. adolescents might be vitamin D deficient and so it would be worth making sure that girls include the best sources every day such as oily fish, eggs and fortified foods like breakfast cereals and powdered milk. Plus that basic, free source good old fashioned sunlight.


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