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Adequate vitamin D and calcium help protect against osteoporosis in elderly men and postmenopausal women.
Vitamin D deficiency is associated with several risk factors for cardiovascular disease.
Some studies have shown that vitamin D supplementation can improve sexual functioning and increase testosterone levels in men who are vitamin D deficient.
It is recommended that men have at least 15–50 mcg (600–2,000 IU) per day of vitamin D, which can come from food, exposure to sunlight, supplements, or a combination of these. Having too much or too little can be dangerous for your health.
Vitamin D supplements can interact with certain medications. Talk to your healthcare provider before taking vitamin D if you are already taking cholestyramine, corticosteroids, orlistat, or seizure medications.
Talk to your healthcare provider if you are concerned about any side effects you experience.