Frequent Illness or Infections
A deficiency in vitamin D can impair your body’s ability to fight off infections, leading to more frequent illnesses. Studies link low vitamin D levels to a heightened risk of respiratory infections, including colds, bronchitis, and pneumonia. Research from 2020 ties deficiency to increased vulnerability to viral diseases like flu and COVID-19. Supplementing with vitamin D could reduce the incidence of these infections, particularly in individuals with severely low levels. [4]
Anxiety and Depression
Low levels of vitamin D have been associated with increased instances of anxiety and depression, particularly in older adults. While some studies offer conflicting results, others like this 2021 paper have found that vitamin D supplementation can help alleviate depression symptoms. This suggests a complex interaction between vitamin D levels and mental health that warrants further investigation. [5]
