Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin that plays a crucial role in maintaining bone health by aiding calcium absorption in the gut. It is produced in the skin in response to sunlight and can also be obtained from certain foods like fatty fish, egg yolks, and fortified dairy products. Vitamin D3 helps support the immune system, muscle function, and overall well-being. Deficiency in vitamin D3 can lead to bone disorders such as osteoporosis and rickets.
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