Which vitamin is involved in calcium metabolism?

Vitamin D plays a crucial role in calcium metabolism as it is integral in regulating calcium and phosphate levels in the bloodstream, which are essential for maintaining healthy bones and teeth. When the body is exposed to sunlight, it synthesizes vitamin D, which then promotes the absorption of calcium from the diet through the intestinal walls. Additionally, vitamin D helps maintain adequate calcium levels in the body by promoting its reabsorption in the kidneys and facilitating the release of calcium from bone stores when necessary. Without sufficient vitamin D, calcium absorption is significantly impaired, leading to potential health issues such as rickets in children and osteomalacia or osteoporosis in adults. This highlights the essential role that vitamin D plays in maintaining overall calcium balance and bone health within the human body.