Which vitamin is essential for calcium absorption?

Vitamin D is essential for calcium absorption. It plays a critical role in how the body utilizes calcium from the diet. When calcium is consumed, vitamin D helps facilitate the transport of calcium through the intestines and into the bloodstream, allowing the body to use this vital mineral for various functions, including bone health and muscle function. Without adequate vitamin D, the body struggles to absorb sufficient calcium, which can lead to deficiencies and related health issues such as osteoporosis.

Other vitamins listed do not have a direct role in calcium absorption. Vitamin A is important for vision and immune function, vitamin E serves as an antioxidant and protects cells, and vitamin K is primarily involved in blood clotting and bone metabolism. However, none of these vitamins influence the absorption process of calcium in the same way that vitamin D does.