25(OH)D (25-Hydroxyvitamin D)

25(OH)D, also known as 25-Hydroxyvitamin D, is a critical biomarker for assessing an individual’s vitamin D status, which plays a crucial role in longevity and healthy aging. This fat-soluble vitamin is essential for maintaining bone health, supporting immune function, and promoting overall well-being. Low levels of 25(OH)D have been linked to an increased risk of chronic diseases, including cardiovascular disease, cancer, and autoimmune conditions, all of which can impact longevity. Therefore, monitoring and optimizing 25(OH)D levels through appropriate sun exposure, dietary intake, and supplementation is essential for supporting longevity. When interpreting the levels of 25(OH)D, it is important to note that optimal levels may vary depending on individual factors such as age, skin pigmentation, geographic location, and overall health status. Generally, levels of 25(OH)D are considered optimal when they fall within the range of 30-50 ng/ml. Levels below 30 ng/ml are indicative of vitamin D insufficiency, while levels above 50 ng/ml may raise concerns of potential toxicity. Regular testing and maintaining adequate levels of 25(OH)D are therefore crucial for supporting optimal health and promoting longevity. As a longevity expert, I emphasize the importance of understanding and managing this biomarker to support overall health and well-being in the pursuit of longevity.