Fasting After Bariatric Surgery: Risks and Health Advice for Obese Patients During Ramadan

Bariatric surgery, such as sleeve gastrectomy, gastric bypass, and gastric banding, is a medical option aimed at treating morbid obesity, which can lead to serious health problems like diabetes and heart disease. However, during the holy month of Ramadan, fasting can be challenging for those who have undergone these surgeries, as it can expose them to various health issues. Therefore, it is important to understand the risks involved before deciding to fast during Ramadan after surgery.

Is it possible to fast after bariatric surgery?

After bariatric surgery, patients are advised to follow specific medical recommendations to avoid health complications, especially in the postoperative period. These recommendations include eating small, frequent meals, eating slowly, chewing food thoroughly, and separating food intake from liquids. If a person has undergone bariatric surgery, it is advisable to avoid fasting in the first few months after surgery (12-18 months), as fasting can exacerbate problems such as malnutrition and dehydration.

Challenges Patients May Face During Ramadan:

Changes in Eating Habits and Malnutrition: After bariatric surgery, patients are advised to eat small meals slowly. Fasting for extended periods may lead to a desire to eat large quantities quickly at Iftar (the meal to break the fast), which can cause abdominal pain, nausea, and vomiting, and consequently lead to dehydration, malnutrition, and vitamin and mineral deficiencies.

Dehydration: After bariatric surgery, it is essential to drink 1.5 to 2 liters of fluids daily to maintain hydration and prevent constipation. Fasting for extended periods during Ramadan, especially on hot summer days, can increase the risk of dehydration.

Vitamin and Mineral Deficiencies: Patients after bariatric surgery are advised to take nutritional supplements regularly. However, with the limited stomach capacity, it may be difficult to take these supplements in the short timeframe during Ramadan, which can lead to vitamin and mineral deficiencies.

Low Blood Sugar: The risk of low blood sugar (hypoglycemia) increases with prolonged fasting, especially if the person does not eat between Suhoor (pre-dawn meal) and Iftar (breaking the fast).

When Can a Person Begin Fasting? After 12-18 months following surgery, the risk of complications associated with fasting decreases, and some patients may be able to resume fasting, especially if they are in good health and have recovered satisfactorily. However, it may be recommended to consume some fluids during the day, particularly for patients who have undergone procedures such as gastric bypass and experience malabsorption issues.

Dietary and lifestyle recommendations for patients after weight loss surgery during Ramadan:

Begin your Iftar (breaking the fast) by drinking water and eating dried dates or soup to prepare your body for the main meal, which should be eaten after Maghrib prayer (sunset prayer). Drinking water helps combat dehydration caused by fasting, and eating 1-2 dates will raise blood sugar levels after a long fast.

Ensure that the main meal consists of protein-rich foods, vegetables/salad, and slow-release carbohydrates. Remember that the ideal meal balance is: half the plate is protein, and the remaining two-thirds are vegetables and carbohydrates. Always eat protein first, then vegetables, and finally carbohydrates. When fasting for extended periods (more than 10 hours), eating suhoor too early can lead to a drop in blood sugar levels before iftar. Therefore, in such cases, it is advisable to delay suhoor as much as possible.

Avoid sleeping immediately after eating, as this can lead to health problems such as acid reflux, abdominal discomfort, and/or vomiting.

Remember the golden rules: eat slowly, chew your food thoroughly, separate eating and drinking, stop eating when you feel full, and avoid carbonated/sugaryying drinks.

Avoid foods high in fat and sugar, such as traditional sweets or fried foods, to prevent symptoms of dumping syndrome.

Stay well-hydrated; start iftar by drinking 200-250 ml of water. Your goal is to consume at least 1.5 liters of fluids daily.

Continue taking your vitamin and mineral supplements as recommended.

Continue your regular physical activity routine during Ramadan, but schedule it appropriately. For example, you can exercise two hours after iftar and then have a light snack after your workout to restore energy. Patients who have undergone bariatric surgery are advised against fasting in the first few months after surgery due to potential risks such as malnutrition and dehydration. If they are in a good recovery phase after 12-18 months, they may consider fasting while following specific medical recommendations to maintain their health. It is always recommended to consult a doctor before deciding to fast to ensure there are no health complications.