Every year, there are more and more patients undergoing metabolic and bariatric surgery procedures all over the world. Bariatric surgery helps to reduce weight and normalize or significantly improve many metabolic parameters, such as the levels of glucose, cholesterol, uric acid, and more. Compared to sometimes very wrong and unhealthy diets, bariatric surgery is safer and much more effective. Along with a decrease in body weight, some chronic diseases, such as diabetes mellitus, metabolic syndrome, and diseases of the musculoskeletal system, also step back. [1,2,3] In addition to these health benefits, however, there is a real possibility that the risk of nutritional deficiencies will increase as such patients are observed postoperatively.[1,2,4] In fact, studies have shown that as patients rehabilitate after surgery, transit to a habitual way of life, and face other problems and realities, their adherence to the recommendations of doctors declines. [5] Follow-up visits, routine laboratory tests, and daily nutritional supplementation are essential in the daily routine for people planning to undergo such procedures; failure to comply with these requirements poses risks of nutritional deficiencies which can lead to irreversible diseases. [6] Whereas the complication rate of surgical interventions has decreased significantly over the years (despite the continued increase in the number of such procedures), the sad reality is that nutritional deficiencies after surgery have actually become more often. [7]
The good news is that nutritional deficiencies can be prevented, as studies show that patients following standard recommendations throughout their lifetime can reduce the risk of developing nutritional deficiencies. Following the recommendations helps improve nutritional outcomes and reduce the risk of developing diseases that are the result of long-term nutritional, vitamin, macro- and micronutrient deficiencies. [2]
Daily supplementation is important because postoperative nutritional deficiencies can affect blood, bone, muscle, and nervous system function. Without a blood test and additional tests, patients may not know they have a deficiency or are at risk of developing it because a deficiency is not always manifested as physical symptoms. In some cases this is true – let’s take thiamine as an example. A deficiency of this vitamin can be manifested in the form of vomiting. However, not every nutrient has a characteristic sign or symptom that indicates a deficiency, so people, regardless of whether they have had bariatric surgery or not, may never suspect a deficiency unless they do a blood test (general, biochemical, some additional parameters). [1,2] This highlights the importance of regular nutrient analysis to improve health and reduce the risk of developing diseases described below in four key areas: