Prevalence and Link to Fatigue
Approximately 40% to 75% of the teen and adult population in the United States is deficient in vitamin D, according to Raymond Francis in “The Great American Health Hoax.” [1] Low energy and occasional fatigue are commonly reported among individuals with low vitamin D status, according to a report on the silent epidemic of nutrient deficiencies. [2] The scale of the problem is vast, with estimates suggesting that nearly half of all adults may have insufficient levels, the report stated.
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