Vitamin D deficiency can enhance the danger of osteoporosis, some malignancies and inflamation related illnesses. Approximately 50 percent of Americans are vitamin D deficient. Vitamin D is produced from the skin upon being exposed to sunlight. Now research states that vitamin D increases the male sex hormone testosterone. Decreased testosterone levels can add to the risk of male impotence, muscle reduction, osteoporosis and depression.
The research, printed in Clinical Endocrinology, examined the connection of vitamin D (25(OH)D) levels with testosterone. Scientists at the Medical University of Graz, Austria, assessed the blood samples of almost 2,300 men called for coronary angiography from 1997 – 2000. The study assayed the participants’ blood for testosterone and vitamin D levels.
They discovered that increased amounts of vitamin D (greater than 30 mug/l) were associated with substantially higher amounts of testosterone. Additionally, testosterone and vitamin D levels were highest in August and lowest in March.
“Androgen levels and 25(OH)D levels are associated in men and reveal a concordant seasonal variation,” the research writers determine. “Randomized controlled trials are warranted to evaluate the effect of vitamin D supplementation on androgen levels.”
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