It’s long been known that Vitamin D functions with calcium to keep bones healthy and avoid deformities such as rickets in children and osteomalacia in adults. But it is becoming increasingly clear that it also plays a vital role for our immune system, helping to fight off bacterial, viral and fungal invaders.
Vitamin D appears to boost immunity through several ways, such as helping immune cells to function properly and dampening the inflammatory response. There is even some evidence that it protects against coronavirus, since low Vitamin D levels have been associated with both a higher number of coronavirus deaths and cases for European countries and more severe outcomes for individuals affected by the disease. It may be no coincidence that the pandemic broke out in winter, when people’s Vitamin D levels are typically at their lowest.