Weight Loss Surgery Specialist

David L. Chengelis, MD -  - Advanced Laparoscopic Surgeon

Advanced Laparoscopic Surgery, PC

David L. Chengelis, MD

Advanced Laparoscopic Surgeon located in Troy, MI

Since the end of World War II, the American diet has increasingly relied on processed foods, which are high in calories. At the same times, people’s lives have become more sedentary. The result is an obesity epidemic that is putting lives at risk. At Advanced Laparoscopic Surgery P.C. in Royal Oak, Michigan, board-certified surgeon Dr. David Chengelis provides weight loss surgery to help people reach a healthy weight when dieting and exercise have failed. If you live in or around Detroit, call or schedule a consultation online today to find out if weight loss surgery is right for you. Dr. Chengelis participates in multidisciplinary weight loss programs that include nutritionist, psychologists, medical evaluations, at both Beaumont and Unisource weightloss programs. All surgeries are performed at Beaumont Health, Royal Oak Hospital.

Weight Loss Surgery Q & A

What are the dangers of obesity?

Nearly 40% of American adults are classified as obese. Your body mass index (BMI) is an indicator of whether your weight is healthy. A healthy body weight has a BMI that ranges from 18.5 to 25. If you’re overweight, your BMI is between 25 to 29.9. A BMI of 30 or higher indicates obesity.

Medical studies show that if you are overweight or obese, your chances of developing dangerous health conditions increase. Some of the diseases and conditions with strong links to obesity include:

  • Diabetes
  • Hypertension
  • High cholesterol
  • Sleep apnea
  • Arthritis
  • Acid reflux
  • Urinary incontinence
  • Fatty liver
  • Mood disorders such as depression

How can surgery help me lose weight?

The math of losing weight is simple: Eat fewer calories than you burn. Unfortunately, in reality, weight loss is never that simple. Not only is it hard to determine your daily calorie needs, but unless you track your meals and snacks diligently, it’s very easy to eat hundreds more calories than you think.

Dr. Chengelis performs weight loss surgery that reduces the amount of space available in your stomach. This forces you to consume less food and fewer calories. You also learn to change your diet to include more nutritious options to ensure your body gets all the nutrients and vitamins you need to maintain healthy function.

What weight loss surgeries are available?

At Advanced Laparoscopic Surgery P.C., Dr. Chengelis performs three types of bariatric surgeries as well as revision surgeries.

Laparoscopic RNY gastric bypass

Roux en Y (RNY) gastric bypass is a procedure where Dr. Chengelis surgically creates a small 15-20 ml pouch from the top of your stomach and creates a bypass from your stomach to the passage to your small intestine.

Laparoscopic gastric sleeve

If you choose to have a gastric sleeve, Dr. Chengelis surgically removes part of your stomach, leaving you with a narrow sleeve instead of a normal sized stomach

Revision surgery

Unfortunately, in some cases, people regain weight after their surgeries or have other issues related to the first weight loss surgery. Dr. Chengelis is experienced in doing revision surgeries to deal with these situations.

If you’re struggling to lose weight with diet and exercise changes and have a BMI of 30 or above, call or schedule a consultation online and learn if weight loss surgery is right for you.


*All surgeries are performed at Beaumont Health, Royal Oak Hospital.