Study: Major Vitamin Has Gone Unnoticed in Muscle Building for Years
A recent study conducted at The Westmead Institute for Medical Research has shed light on the role of vitamin D in muscle cells, showing that vitamin D signaling is needed for normal muscle size and strength.
Researchers found that mice missing the vitamin D receptor only in myocytes (muscle cells) had smaller muscles, and they were less strong.
They also had significantly decreased running speed and didn’t run as far as mice with normal vitamin D action.
Lead researcher, Professor Jenny Gunton says, “For a long time, we have known that vitamin D deficiency is associated with muscle weakness and greater risk of falls and fractures.
“However, whether vitamin D played a direct role in muscle wasn’t known.
“We show that vitamin D receptor is present in low levels in normal muscle, and our study found that deleting muscle cell vitamin D receptors had important effects on muscle function.”
While more research is needed, Professor Gunton says that these results suggest that maintaining normal vitamin D signaling in muscle is important for preserving muscle bulk and function.
“These findings also have the potential to open up avenues to pursue new therapies that target muscle cell vitamin D receptors.
“These therapies could help to address or prevent age-related sarcopenia (degenerative loss of skeletal muscle mass) and other disorders related to muscle function.”