Vitamin D is a nutrient that helps with calcium absorption in the body. Adequate levels of vitamin D are essential for maintaining bone health, as it aids in the conversion of dietary calcium into a usable form. This nutrient also plays a crucial role in bone growth and remodeling, reducing the risk of osteoporosis and fractures. Sources of vitamin D include sun exposure, fortified foods, and fatty fish. Ensuring sufficient intake supports optimal calcium balance and overall skeletal health.