Which vitamin helps with the absorption of calcium?

Vitamin D is essential for the absorption of calcium in the body. This vitamin facilitates the intestinal absorption of calcium, which is crucial for maintaining healthy bones and teeth. Without sufficient vitamin D, the efficiency of calcium absorption is significantly reduced, which can lead to issues such as rickets in children or osteomalacia in adults, both of which involve weakened bones due to inadequate mineralization.

While other vitamins play important roles in various bodily functions, they do not directly affect calcium absorption in the same way that vitamin D does. For instance, vitamin A is important for vision and immune function, vitamin K is primarily involved in blood clotting and maintaining bone health alongside calcium, and vitamin B12 is crucial for red blood cell formation and neurological function. However, none of these vitamins enhance calcium absorption as specifically and effectively as vitamin D does.