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Vitamin D and Muscle Mass
A study by the Journal of Clinical Endocrinology and Metabolism examined
the effect of Vitamin D supplementation on muscle size and the reduction
in the risk of falls in older adults. Participants were given a placebo
or 4000 IU of Vitamin D daily. After 4 months, the Vitamin D takers had
increased their thigh muscle fiber size by 10%, whereas the placebo takers
decreased by 7%.
What should you do? Aim for the Recommended Dietary Allowance for Vitamin
D (600IU for adults up to age 70 and 800IU for those over 70). Sources
of Vitamin D include fortified dairy products, fatty fish, egg yolks,
sunshine and supplements.
The original study from the Journal of Clinical Endocrinology and Metabolism
Volume 98 Issue 10 October 2013:
Blog post contributed by Sarah Gagliardi, RD. Ms. Gagliardi obtained her
Bachelor of Science in Dietetics from the University of North Dakota and
has worked as a registered dietician for Hoag for more than five years.