Vitamin D deficiency, affecting 1 in 4 US adults, can cause subtle symptoms like bone and joint pain, muscle weakness, teeth problems, hair loss, fati ...
As with many dietary components, and especially for vitamin D, which the human body ... of harm for calcium begins when intake surpasses 2,000 milligrams per day. Side effects of excess vitamin ...
"Competitive and amateur sports are equally affected. It's about relative overload," Karsten Hollander tells DW. "For example, you sign up for a spring marathon on New Year's Eve and go from doing ...