Which nutritional deficiencies are most commonly associated with bariatric surgeries?

Bariatric surgeries, such as gastric bypass and sleeve gastrectomy, significantly alter the gastrointestinal tract, impacting nutrient absorption and leading to various nutritional deficiencies. The most commonly associated deficiencies following these procedures include fat-soluble vitamins (A, D, E, K) and B12 due to the reduced absorption capacity of the remnant stomach and bypassed sections of the intestine.

Fat-soluble vitamins are particularly affected because the surgical alterations limit the body's ability to absorb them effectively. Additionally, vitamin B12 deficiency is common due to decreased intrinsic factor production, which is necessary for B12 absorption in the intestine. The combination of these deficiencies is significant and can lead to serious long-term complications if not properly monitored and managed.

Understanding the implications of bariatric surgery helps healthcare providers to implement appropriate nutritional supplementation and surveillance strategies post-operatively to mitigate these risks and ensure optimal patient outcomes.