The main goal of stomach reduction and other obesity treatment methods is for patients to lose the weight they cannot lose with diet and exercise and to get rid of their obesity. In these treatments, some surgical procedures are performed on the digestive system and effective weight loss is achieved. However, some side effects such as vitamin and mineral deficiencies can also occur.

The risk of vitamin and mineral deficiencies is not the same for all bariatric surgery methods. With some procedures, the risk is relatively low. However, this risk must be taken into account for every procedure, including gastric sleeve surgery.


A vitamin and mineral deficiency is generally not to be expected after a stomach reduction. This is because only the stomach is affected by this method, and around 80% of the stomach is removed and eliminated from the body.

By removing most of the stomach, there is a significant reduction in the hormones and other secretions secreted by the stomach. However, as portions are also reduced, this does not generally lead to problems with the absorption of minerals and vitamins.

The absorption of vitamins and minerals takes place in the small intestine. Intervening in the small intestine or bypassing part of it ensures that absorption is not impaired.

Since a gastric bypass and other similar procedures bypass part of the small intestine, this leads to problems with vitamin and mineral absorption. As a result, vitamin and mineral deficiencies occur. It is assumed that this side effect of gastric bypass surgery occurs with all methods of bariatric surgery. However, this risk is not very high with methods such as gastric reduction.

Although the risk is not very high, patients’ vitamin and mineral levels should be checked after gastric bypass surgery. It is important to carry out the necessary treatments for vitamin and mineral deficiencies for various reasons without wasting time.


No physical signs or other symptoms are to be expected with vitamin and mineral deficiencies. Since bariatric surgery is a serious intervention in the digestive system, the existence of such a risk is accepted. The blood values are checked monthly in the first few days after the operation.

If no vitamin and mineral deficiencies are detected during the monthly check-up, blood tests are carried out every three months. If no problem is detected, the period is first increased to 6 months and then to 12 months.

It is important that no physical findings are expected during the tests. This is because the decrease in vitamin and mineral levels must not result in any physical findings or the physical findings must not be noticed. It is therefore very important that this problem is recognised in good time so that it does not spread and have negative effects.

taking vitamins/minerals after gastric sleeve surgery

Vitamin and mineral levels are not expected to be problematic after a stomach reduction. However, necessary checks will continue to be carried out. The following vitamins and minerals are expected to decrease:

  • Iron
  • Vitamin B12
  • calcium
  • Vitamin D
  • folic acid
  • Zinc

Their deficiency has different consequences. In addition, the degree of deficiency and the person’s general condition are also important for the consequences. For example, a dramatic zinc deficiency can seriously affect the immune system, while a minor deficiency has little or no effect.


As a reduction in minerals and vitamins is found during check-ups following stomach reduction or other obesity treatment methods, it is recommended that these be taken in the form of nutritional supplements. It is very important that patients pay attention to the following points when taking vitamins and minerals:

  • It should be borne in mind that the interaction of medicines with each other can cause nausea.
  • To prevent nausea, it should be taken about 30-40 minutes after a meal, when the stomach is not completely empty.
  • In cases where calcium and iron need to be taken, there should be at least 4 hours between them so that they do not interfere with each other’s absorption.
  • When taking iron, care should be taken to ensure that it is not consumed together with dairy products containing high levels of calcium.
  • Foods that impair the absorption of drinks should be avoided.
  • The intake of vitamins and minerals should be regular and not interrupted.

It is possible to solve this problem with regular vitamin and mineral supplements. Although the likelihood of this occurring after a stomach reduction is very low, it should not be forgotten that there is a solution to this problem.

5/5 - (1 vote)

Similar Posts