Category: Vitamin absorption

Approximately 75% of dietary folate is absorbed in the initial sections of the small intestine, specifically the duodenum and jejunum. This vital nutrient, also known as vitamin B9, relies on a complex transport mechanism to enter the bloodstream from the digestive tract. The efficiency of this absorption process is crucial for maintaining overall health and preventing deficiencies.

Beta-carotene absorption efficiency varies drastically, with studies reporting ranges from 5% to over 65%, highlighting that the maximum absorption of beta-carotene is not a static number. Instead, it is a highly individualized and dynamic process influenced by a range of factors including diet, food processing, and a person's physiological status.

According to a systematic review published in the journal *Taylor & Francis Online*, pooled results from randomized controlled trials demonstrated a significant increase in 25-hydroxyvitamin D levels following omega-3 supplementation. This finding offers insight into the question: does fish oil affect vitamin D absorption? The relationship between these two popular supplements is primarily based on their fat-soluble nature and how they are processed by the body.

Even with a balanced diet rich in nutrient-dense foods, you can still face vitamin deficiencies if your body struggles with nutrient absorption, a condition known as malabsorption syndrome. This guide explores the complex reasons behind the question, "Why is my body not digesting vitamins?", and offers insights into the factors that can hinder your body from reaping the full benefits of a nutritious diet.

While most dietary nutrients are absorbed in the small intestine, the absorption of vitamin K presents a more complex picture involving different types of the vitamin and different parts of the gut. A lesser-known fact is that gut bacteria produce a form of vitamin K, raising questions about where this synthesis and subsequent absorption actually occur.

While intrinsic factor is essential for vitamin B12 absorption, its function is supported by a complex interplay of other nutrients. A deficiency in cofactors like folate or critical elements like calcium can significantly hinder the body's ability to utilize this vital nutrient, even with adequate dietary intake.

According to research, chronic alcohol consumption is known to deplete B vitamins like folate and thiamine, with deficiencies reported in up to 80% of alcoholics. Understanding **what cancels out B vitamins** is crucial for maintaining overall health, as various lifestyle factors can hinder their absorption and effectiveness.