Which vitamin's absorption decreases with age, necessitating monitoring in the elderly?

Vitamin B12 absorption tends to decrease with age due to various physiological changes in the gastrointestinal tract. As individuals age, there may be a reduction in the production of intrinsic factor, a protein essential for the absorption of vitamin B12 from the digestive system. Additionally, older adults may experience changes in gut health, such as a decrease in stomach acidity, which can further hinder the ability to absorb B12 effectively.

Monitoring vitamin B12 levels in the elderly is crucial since a deficiency can lead to significant health issues, including anemia and neurological problems. Unlike some other vitamins that may also experience altered absorption with age, such as vitamin D and vitamin A, the specific mechanisms related to vitamin B12 transport and absorption highlights the importance of vigilance and potential supplementation in older populations. Furthermore, since vitamin B12 is primarily found in animal products, elderly individuals who have dietary restrictions or less appetite may also be at increased risk of deficiency.