If you are considering bariatric surgery in Nairobi, Kenya, one of the first questions you may have is: What BMI do I need for weight loss surgery?

BMI (Body Mass Index) is an important starting point when determining whether bariatric surgery may be suitable for you. However, your overall health, weight-related conditions, previous weight-loss efforts and individual circumstances also matter.

What BMI Qualifies for Bariatric Surgery?

Generally, bariatric surgery may be considered for adults with:

  • BMI of 40 kg/m² or higher – severe obesity, where surgery may be recommended even without other obesity-related conditions.

  • BMI of 35–39.9 kg/m² – surgery may be appropriate, particularly when obesity is associated with conditions such as type 2 diabetes, high blood pressure, sleep apnoea or other health problems.

  • BMI of 30–34.9 kg/m² – metabolic or bariatric surgery may be considered for selected patients, especially where conditions such as type 2 diabetes are present and other approaches have not achieved adequate results.

These figures are guidelines rather than a simple pass-or-fail test. BMI does not tell the whole story, and a specialist assessment is important before deciding whether surgery is appropriate.

Why Is BMI Important?

A high BMI can increase the risk of obesity-related health problems, including type 2 diabetes, high blood pressure, sleep apnoea, joint problems and cardiovascular disease.

Bariatric surgery is designed to support significant and sustained weight loss and may also improve several obesity-related conditions.

Could Bariatric Surgery Be Right for You?

If you have struggled to achieve lasting weight loss through lifestyle changes and your BMI falls within a range where bariatric surgery may be considered, a specialist assessment can help determine your options.

For patients in Nairobi and across Kenya, Dr. Lance Mayabi provides specialist bariatric and laparoscopic surgical care, helping patients understand whether weight loss surgery is appropriate for their individual needs.

Your BMI is only the beginning. The right treatment depends on your health, goals and individual assessment.

Take the Next Step

If you are considering bariatric surgery in Nairobi, book a consultation with Dr. Lance Mayabi to discuss your weight, health and suitable treatment options.