15/01/2025
Vitamin D3, also known as cholecalciferol, is one of the most crucial forms of vitamin D, a fat-soluble nutrient essential for bone health, immune function, and overall well-being. It plays a pivotal role in calcium and phosphorus absorption, which helps maintain strong bones and teeth. Vitamin D3 is naturally synthesized in the skin when exposed to sunlight, specifically UVB radiation, and is also found in certain foods such as fatty fish, egg yolks, and fortified products. Deficiency in D3 can lead to issues such as rickets in children, osteomalacia in adults, and an increased risk of osteoporosis, highlighting its importance in maintaining skeletal integrity.
There are several forms of vitamin D supplements available, with D3 being the most biologically active and efficient at raising and maintaining blood levels of 25-hydroxyvitamin D, the storage form of the vitamin. D3 supplements are typically derived from animal sources like lanolin (sheep's wool) or fish oil, but vegan alternatives sourced from lichen are increasingly common. Another form of vitamin D, D2 (ergocalciferol), is plant-based and found in fortified foods and mushrooms exposed to UV light. While both D2 and D3 can raise vitamin D levels, research suggests that D3 is more effective at sustaining higher levels over time due to better absorption and longer-lasting effects in the body. This makes D3 the preferred choice for supplementation, especially in individuals with limited sun exposure or dietary
