Vitamin D plays an important role in the regulation of calcium and phosphorus absorption by an organism. It also helps keep the brain and immune system working. Researchers have now shown that vitamin D supplementation reduces the risk of dynapenia in older people by 78%. Dynapenia is an age-associated loss of muscle strength. "Vitamin D is known to participate in various functions of the organism. It’s a hormone and roles include helping to repair muscles and releasing calcium for muscle contraction kinetics," said Tiago da Silva Alexandre. Bone and muscle tissue are interconnected not just mechanically and physically, but also...