Which vitamin is crucial for calcium absorption?

Vitamin D plays a vital role in the absorption of calcium in the body. It promotes the intestinal absorption of calcium, ensuring that enough calcium is available for various bodily functions, including bone health. The presence of vitamin D enhances the efficiency of calcium transport proteins in the intestines, which is essential for maintaining adequate calcium levels that support the mineralization of bones and teeth.

Without sufficient vitamin D, the body is unable to absorb calcium effectively, leading to potential deficiencies and complications such as osteomalacia in adults and rickets in children. This underscores the importance of ensuring adequate vitamin D levels, whether through sunlight exposure, diet, or supplementation, particularly in individuals at risk of deficiency.