Vitamin D and the immune system

One of the important effects that vitamin D has on the body is its impact on the immune system. For a long time, researchers only suspected the vitamin's positive influence on the human immune system. In recent years, however, the assumption has become a certainty. Vitamin D likely has these effects on the immune system:

• Vitamin D helps T cells prepare a strong immune response.
• Low vitamin D levels have been linked to common infections such as the flu and the common cold.
• Regular consumption, for example through food supplements, reduces the risk of inflammation of the airways.
• A deficiency in the vitamin can make autoimmune diseases such as multiple sclerosis worse.
• The development of type 2 diabetes could be favored by a vitamin D deficiency.

annotation: Most studies specifically emphasize that vitamin D deficiency has negative effects on the immune system. However, the effects of a sufficient or high vitamin D level have so far been little researched.

See also:

• vitamin D
• Vitamin D and bone stability
• Vitamin D and Covid-19

Sources:

• Vitamin D and the immune system
• Overwhelming evidence supports Vitamin D's immune function benefits
• Vitamin D study sheds light on immune system effects
• Effect of Monthly High-Dose Vitamin D Supplementation on Acute Respiratory Infections in Older Adults: A Randomized Controlled Trial
• Harvard University on Vitamin D.