Vitamin D deficiency may contribute to the development of muscle atrophy.

Getting your daily dose of Vitamin D through direct sunlight exposure is well known. But how does vitamin D contribute to your training goals?

Vitamin D deficiency is associated with oxidative stress in skeletal muscles, which influences mitochondrial function and affects the development of skeletal muscle atrophy. 

To protect against unnecessary atrophy, follow the US Institute of Medicine’s guidelines of 1000–4000 IU of vitamin D daily.

Dzik, K.P. & Kaczor, J.J. European Journal of Applied Physiology (2019)