Category: Fat soluble vitamins

According to the National Institutes of Health (NIH), vitamin D is a fat-soluble vitamin, which means that unlike water-soluble vitamins, it is stored in the body's fatty tissue and liver. The question, 'Does vitamin D3 accumulate in the body?' is critically important for anyone considering supplementation, as excessive buildup can lead to serious health issues.

According to scientific research, while the terminal ileum is critical for bile salt reabsorption, the majority of dietary fat-soluble vitamins, including vitamin D, are actually absorbed earlier in the small intestine, primarily in the jejunum. This raises a key question for those with gastrointestinal conditions: is vitamin D absorbed in the terminal ileum, and what happens when its function is impaired?

While both are fat-soluble antioxidants with complementary benefits for skin and eye health, taking certain amounts of vitamin E can interfere with vitamin A absorption. Therefore, it is important to understand the interaction before combining these supplements.

Over 85% of people with cystic fibrosis (CF) suffer from pancreatic insufficiency, which impairs the absorption of fats from food. Since fat-soluble vitamins (A, D, E, and K) depend on dietary fat for absorption, this malfunction makes it essential for cystic fibrosis patients to take fat soluble vitamins.