Which vitamin helps in the absorption of calcium?

Vitamin D plays a crucial role in the absorption of calcium in the body, making it essential for maintaining healthy bones and teeth. It promotes the intestinal absorption of calcium, which is necessary for achieving optimal calcium levels in the bloodstream. Without adequate vitamin D, calcium absorption is decreased, which can lead to bone density issues and conditions such as rickets in children or osteomalacia in adults.

In contrast, vitamin A primarily functions in vision and immune function, vitamin B12 is vital for red blood cell formation and neurological function, and vitamin C is known for its role in collagen synthesis and antioxidant properties. None of these vitamins directly influence calcium absorption the way vitamin D does. Therefore, understanding the specific functions of these vitamins highlights the importance of vitamin D in calcium metabolism.