It has great benefits throughout your body. As it circulates through your bloodstream, it aids in the absorption of calcium and phosphorus, which helps keep your bones healthy and strong. It's also very beneficial for a healthy immune system, and it's beneficial to mood, heart health, and even weight loss.Getting a sufficient amount of vitamin D is important for normal growth and development of bones and teeth, as well as improved resistance against certain diseases.If your body doesn’t get enough vitamin D, you’re at risk of developing bone abnormalities such as soft bones (osteomalacia) or fragile bones (osteoporosis).