Struggling to Build Muscle? You May Need More of This Nutrient

Muscle Menu: Beginning around our 30s, we gradually lose muscle mass, which affects everything from strength and balance to metabolic health. Resistance training and adequate protein intake remain the foundation of healthy muscles, but other nutrients tend to get lost in the mix. New research reinforces that vitamin D status plays an important role in maintaining muscle as we age. 

The Study: Researchers analyzed health data from more than 11,000 U.S. adults ages 18 to 59 in the National Health and Nutrition Examination Survey (NHANES) and paired those findings with genetic data from more than 417,000 people in the UK Biobank. People with higher blood levels of vitamin D tended to have more muscle mass in the arms and legs. This held true even when the researchers accounted for factors like race, age, physical activity level, and body weight.

The Takeaway: If you’re trying to preserve muscle as you age, vitamin D deserves a place on your checklist alongside strength training and protein. If you’re at risk for deficiency, talk with your healthcare provider about having your vitamin D levels checked.

Keep in Mind: If your vitamin D levels are low, supplementation may help you preserve muscle mass. (And it’s safer than trying to get all of your vitamin D from the sun).