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Reasons Why Taking Supplements After Bariatric Surgery Is So Important 2022

The patient is prone to mineral and vitamin deficiencies and malnutrition after a bariatric surgical procedure. For this reason, patients need to take bariatric vitamins, supplements, and minerals for the rest of their lives. Everyone who has had bariatric surgery is given supplements of calcium, vitamin D, B vitamins, and iron. It is important to have proper nutrition before this type of surgery but it is equally important after surgery.

Patients receive advice from the health care team and dietitian on what and how to eat. Following these tips can help them avoid malnutrition but weight gain can also be avoided. In this post, we’ll look at some of the reasons why it’s important to take supplements after bariatric surgery.

Why do we need supplements?

The main reason you need vitamins and minerals after bariatric surgery is because your body produces less. stomach acid than before the operation. This is problematic because stomach acid helps the body absorb vitamins and minerals from the food you eat.

After a surgical procedure, the area that absorbs nutrients is smaller. A smaller area means that smaller amounts of vitamins and minerals can be taken in which are very important for both body and mind. Below we list some of the most important vitamins and minerals that you need to supplement your diet daily after bariatric surgery.


need iron transport oxygen from the lungs to the body. But after bariatric surgery, the body has a harder time absorbing the iron it gets through food. This is related to less production of acid in the stomach, but also because you eat less than before.

Vitamin B 12

Vitamin B12 helps make red blood cells. It is also an essential vitamin for the functioning of the nervous system. Like iron, stomach acid helps capture vitamin B12, but it’s something the body produces less after bariatric surgery.


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A large part of the calcium you get is absorbed in the part of the intestine that is cut off during gastric bypass. Since calcium is what keeps your skeleton both healthy and strong, it’s important to replenish it.

vitamin D

vitamin D It plays an important role in how your body takes up calcium and phosphate, which are important for a strong skeleton. The sun’s rays and vitamin D are not always enough to meet the vitamin D requirement you need through food. In fact, many people already have low levels of vitamin D before bariatric surgery – so they need to supplement it through pills.

Folic acid

It’s not possible to talk about folic acid without mentioning folate – it’s like two sides of the same coin. Or yes, two different forms of the same B vitamin. You get folate through foods such as cabbage, beans, fruits and berries.

On the other hand, folic acid is an artificially produced folate. Since folate and folic acid intake worsens after bariatric surgery (the part of the intestine that is bypassed by the gastric sleeve or bypass), it is important to make sure you get it. Folic acid and folate are important for the normal functioning of cell division, the composition of amino acids (the building blocks of the body), and in turn the formation of red blood cells.


Thiamine helps with carbohydrate metabolism as well as normalize nerve and muscle function. If you have had a bariatric surgery procedure, you may suffer from thiamine deficiency more easily if you lose weight quickly, have low energy intake, or are bothered by vomiting. Missing out on vitamins and minerals can also lead to thiamine deficiency, so make sure you keep taking your supplements on time.


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Last but not least, you need zinc to boost your immune system and make proteins, RNA, DNA and carbohydrates. You also get zinc from meat, dairy products, whole grains, cheese and nuts. Therefore, getting a healthy diet into you is an important thing – both before and after the bariatric operation.

final thoughts

If you want to avoid feeling tired, weak, or absolutely “out of it,” it’s important to review your vitamin and mineral levels with your bariatric team. Making sure the above nutrients are delivered to your body is essential for staying healthy and preventing serious conditions like fatigue and muscle weakness, and even anemia or memory loss.

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