Which micronutrient is important for bone health and absorption of calcium?

Vitamin D plays a crucial role in bone health and the absorption of calcium. It enhances the intestinal absorption of calcium, which is essential for maintaining optimal bone density and strength. Without adequate vitamin D, the body struggles to absorb sufficient calcium from the diet, leading to bone health issues such as osteopenia or osteoporosis. Additionally, vitamin D contributes to the regulation of calcium levels in the blood and promotes the functioning of bone cells.

Other micronutrients listed, while important for various bodily functions, do not directly influence calcium absorption. For instance, vitamin C is significant for the synthesis of collagen in bones and tissues but does not facilitate calcium absorption. Vitamin B12 is vital for nerve function and red blood cell production but does not play a role in calcium metabolism. Vitamin K is essential for blood clotting and may influence bone metabolism, but its primary function is not the absorption of calcium. Thus, vitamin D is specifically linked to both bone health and calcium absorption.