Vitamin D is actually not even a vitamin…
…It’s a steroid hormone, mistakenly named as a vitamin.
…Needless to say that if your serum vitamin D levels are too low, more than 1,000 bodily functions are also somewhat impaired.
Several of these functions that vitamin D regulates are linked to the endocrine system, thus not getting adequate amounts of “the bone vitamin”, should in theory reduce testosterone levels.
And if we take a look at the most recent studies, we can see that it’s not only a theory:
a) This study found out that men with sufficient vitamin D levels had significantly higher testosterone levels and lower SHBG count, than men who had insufficient amounts of the vitamin (or hormone) in their blood serum.
Association of vitamin D status with serum androgen levels in men.
http://www.ncbi.nlm.nih.gov/pubmed/20050857
b) This study found out that when healthy male participants take 3332 IU’s of vitamin D daily for a year, they end up having 25.2% more testosterone on average when compared to placebo.
Effect of vitamin D supplementation on testosterone levels in men.
http://www.ncbi.nlm.nih.gov/pubmed/21154195
c) This study found out that older men who supplement with vitamin D, are less likely to have low testosterone levels than men who are not supplementing with the “bone vitamin”.
Additive benefit of higher testosterone levels and vitamin D plus calcium supplementation in regard to fall risk reduction among older men and women.
http://www.ncbi.nlm.nih.gov/pubmed/18351428
The optimal amount of vitamin D in the blood serum seems to be around 50-70 ng/dl. This can be quite easily achieved when supplementing daily with a low to normal dose of high quality vitamin D3 supplement (this is my recommendation) or by spending few hours in the sun each day. Best if you do both.
NOTE: You should avoid the D2 form of the vitamin, it’s cheaply made and the chemical process of manufacturing it is questionable. It’s also not nearly as good in terms of bio-availibity as the D3 form is.
CONCLUSION
Vitamin D is simply a testosterone booster that’s backed up by some extremely solid peer-reviewed research.
It’s also known for its ability to increase lifespan, it improves cardiovascular health, and it even maintains bone health when taken along with calcium and vitamin K2.
http://anabolicmen.com/vitamin-d-testosterone/
…It’s a steroid hormone, mistakenly named as a vitamin.
…Needless to say that if your serum vitamin D levels are too low, more than 1,000 bodily functions are also somewhat impaired.
Several of these functions that vitamin D regulates are linked to the endocrine system, thus not getting adequate amounts of “the bone vitamin”, should in theory reduce testosterone levels.
And if we take a look at the most recent studies, we can see that it’s not only a theory:
a) This study found out that men with sufficient vitamin D levels had significantly higher testosterone levels and lower SHBG count, than men who had insufficient amounts of the vitamin (or hormone) in their blood serum.
Association of vitamin D status with serum androgen levels in men.
http://www.ncbi.nlm.nih.gov/pubmed/20050857
b) This study found out that when healthy male participants take 3332 IU’s of vitamin D daily for a year, they end up having 25.2% more testosterone on average when compared to placebo.
Effect of vitamin D supplementation on testosterone levels in men.
http://www.ncbi.nlm.nih.gov/pubmed/21154195
c) This study found out that older men who supplement with vitamin D, are less likely to have low testosterone levels than men who are not supplementing with the “bone vitamin”.
Additive benefit of higher testosterone levels and vitamin D plus calcium supplementation in regard to fall risk reduction among older men and women.
http://www.ncbi.nlm.nih.gov/pubmed/18351428
The optimal amount of vitamin D in the blood serum seems to be around 50-70 ng/dl. This can be quite easily achieved when supplementing daily with a low to normal dose of high quality vitamin D3 supplement (this is my recommendation) or by spending few hours in the sun each day. Best if you do both.
NOTE: You should avoid the D2 form of the vitamin, it’s cheaply made and the chemical process of manufacturing it is questionable. It’s also not nearly as good in terms of bio-availibity as the D3 form is.
CONCLUSION
Vitamin D is simply a testosterone booster that’s backed up by some extremely solid peer-reviewed research.
It’s also known for its ability to increase lifespan, it improves cardiovascular health, and it even maintains bone health when taken along with calcium and vitamin K2.
http://anabolicmen.com/vitamin-d-testosterone/