Which vitamin helps with the absorption of calcium?

Vitamin D plays a crucial role in the absorption of calcium within the body. It enhances the intestinal absorption of calcium and phosphorus, which are vital for maintaining bone health and metabolic functions. When the skin is exposed to sunlight, the body synthesizes vitamin D naturally, but it can also be obtained from certain foods and supplements.

The presence of adequate levels of vitamin D ensures that the intestines can effectively transport calcium from food into the bloodstream. Without sufficient vitamin D, the body may struggle to absorb enough calcium, even if dietary sources are adequate, potentially leading to issues like weakened bones or conditions such as osteopenia or osteoporosis.

In contrast, other vitamins mentioned do not have a direct role in calcium absorption. Vitamin E is primarily an antioxidant, Vitamin C is essential for collagen synthesis and immune function, and Vitamin B12 is important for nerve health and red blood cell formation, but none of these directly facilitate calcium absorption like vitamin D does.