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Evidence snapshot: The strongest human evidence comes from a 2-year randomized controlled trial in 65 healthy older adults (Nass et al., 2008, Annals of Internal Medicine) showing sustained GH/IGF-1 increases and preserved fat-free mass, plus an earlier short-term human polysomnography study on sleep (Copinschi et al., 1997, Neuroendocrinology, PMID 9349662)

Vitamin D is essential for strong bones because it helps you assimilate calcium

Vendors unwilling to provide documentation warrant skepticism

The recommended dosage varies depending on the product formula, but the general dosing guideline for adults is 2.4 micrograms daily

How the Wrong Syringe Can Compromise a Vaccination 1

You work for an employer that chooses to or is required to test for alcohol use because of safety concerns, such as employers hiring for positions that fall under the Department of Transportations safety-sensitive definitions