Is Gastric Sleeve Surgery Dangerous?
Gastric reduction surgery, medically known as sleeve gastrectomy, is a surgical procedure performed to reduce the volume...
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Some patients may experience hair loss after sleeve gastrectomy. Hair loss is possible after sleeve gastrectomy, gastric bypass, and similar weight loss procedures. Fear of hair loss is one of the most frequently researched and concerning topics among patients who undergo surgery. Rapid weight loss after surgery, sudden changes in eating habits, and the body’s adaptation to a new metabolic balance can affect hair follicles. However, this condition is usually temporary. Since it is a predictable issue, it can be managed with the right approach.
Hair loss after sleeve gastrectomy can vary from person to person. However, in general, in most patients:
It begins 2–4 months after surgery
It may noticeably increase until the 6th month
It tends to slow down and decrease within 9–12 months
The severity and duration of this process depend on the patient’s protein intake, adherence to vitamin and mineral supplementation, and the speed of metabolic adaptation.
Many people wonder whether hair loss after sleeve gastrectomy is normal. Yes, hair loss after sleeve gastrectomy is normal and expected. For most patients, it is not permanent. After surgery, the body redirects its energy to vital organs in order to cope with physiological stress. During this period, hair may temporarily become a lower priority. This condition is generally referred to as “telogen effluvium,” which is temporary hair loss caused by stress and sudden changes. It is commonly seen after surgical procedures.
The causes of hair loss after sleeve gastrectomy are a common concern for those considering this surgery. Hair loss may occur after the procedure for the following reasons:
Significant weight loss in a short period after surgery is perceived by the body as a stress factor. The metabolism switches to survival mode and directs energy primarily to vital functions. As a result, hair follicles may not receive adequate nutrition. However, this condition is temporary.
Protein is the main building block of hair, so meeting daily protein requirements is very important. Adequate protein intake is necessary to prevent hair thinning and shedding. One of the most important causes of hair loss after sleeve gastrectomy is insufficient protein intake.
After surgery, deficiencies in certain vitamins and minerals are more common. The following deficiencies may particularly trigger hair loss:
Iron
Zinc
Vitamin B12
Biotin
Folic acid
These micronutrients are essential for a healthy hair growth cycle.
In procedures that reduce absorption, such as gastric bypass and mini gastric bypass, the body’s ability to utilize nutrients may be limited. This can prevent hair follicles from receiving adequate vitamin and mineral support, leading to increased hair loss.
Sleeve gastrectomy is a significant physiological stress for the body. Postoperative hormonal changes may cause hair to shift more quickly from the growth phase (anagen) to the resting phase (telogen).
The first step in preventing hair loss is ensuring adequate protein intake. The generally recommended daily protein intake is 60–80 grams for women and 80–100 grams for men. This amount must be planned under the supervision of a doctor and dietitian.
Vitamin and mineral supplements should be taken regularly in the amounts recommended by your doctor after surgery. Do not start taking supplements on your own. Supplementation should be planned individually by your doctor based on blood test results.
Regular blood tests are performed at the 3rd, 6th, and 12th months after surgery. Blood tests help detect iron, B12, zinc, and other deficiencies early. As blood levels return to normal, the severity of hair loss will decrease.
Supporting hair and scalp health is very important during this period. Avoid practices that put additional stress on the hair. Hair treatments should be postponed, especially chemical coloring and heat styling. Choose products that do not irritate the scalp.
The answer is clearly Op. Dr. Serkan Tüğen. With over 20 years of experience, he has successfully treated many patients both in Turkey and internationally, particularly in the field of health tourism. He is well known for his principle of providing lifelong dietitian support. He also offers personalized care and attention to each patient.
At his private clinic in Izmir, Healthy Life Clinic, which he founded, he continues to provide the highest quality treatment and services to his patients in 2026. Click for detailed information.
It would not be appropriate to state a fixed price for sleeve gastrectomy here, as many factors are involved. The patient’s clinical condition, comorbidities, weight, age, body mass index (BMI), and height are all considered when determining the cost. Every patient is unique. If you would like to receive pricing information about sleeve gastrectomy, you may contact us and obtain detailed information through a video consultation.

Sleeve gastrectomy usually takes 1–2 hours. However, the duration may vary depending on the patient’s weight, additional health conditions, and surgical details.
Most patients stay in the hospital for 2–3 days after sleeve gastrectomy. This period may be shorter or longer depending on the doctor’s evaluation.
Individuals with a body mass index (BMI) of 35 or higher, or those with a BMI over 30 accompanied by obesity-related conditions, may be suitable candidates.
As with any surgical procedure, sleeve gastrectomy carries risks. However, with an experienced team and proper patient selection, the risk rate is low.
In the first year after surgery, patients may lose approximately 60–80% of their excess weight. Weight loss depends on adherence to diet and lifestyle changes.
Since the procedure is performed laparoscopically (minimally invasive), postoperative pain is generally mild and manageable.
After surgery, there are liquid, pureed, and solid nutrition phases. Adherence to the postoperative diet program is very important.
The stomach volume is permanently reduced after sleeve gastrectomy; however, overeating and poor dietary habits may cause some enlargement in the long term.
Patients can usually return to desk jobs within 10–15 days. This period may be longer for physically demanding jobs.
Sleeve gastrectomy is a permanent surgical procedure; however, long-term success requires healthy eating habits and lifestyle changes.
