Weight loss surgery, also referred to as bariatric surgery, is an
option for many chronically obese people who have been unsuccessful
with other diets and exercise routines. There are several types of
weight loss surgery, all of which are done for people who are at least
100 pounds overweight and/or who have a body mass index (BMI) of 40 or
more, and have been in this condition for at least 5 years. Chronic
obesity can lead to a range of life-threatening health problems such as
heart disease, diabetes, sleep apnea, arthritis, and more.
Weight
loss surgery can involve either of two approaches, according to The
American Society for Bariatric Surgery. One type includes restrictive
procedures, which help to limit the patient's need for food intake to
one meal a day, but don't affect the digestion of food. The other type
includes malabsorptive procedures, which alter the process of digestion
and thus help the patient to reduce their absorption of calories.
There are two major types of restrictive procedures:
1. Lap band surgery, which through laparoscopic surgery places a
silicone gastric band around the top of the stomach to reduce the size
of the stomach pouch. This type of surgery allows a person to feel full
after eating only a small amount of food
2. Gastric bypass
surgery, which involves stapling the small, upper part of the stomach to
separate it from the rest of the stomach, and then rerouting the small
intestine to connect it to the smaller stomach pouch.
Of the two
procedures, gastric bypass surgery is more complex than lap band
surgery, which is relatively uncomplicated and only requires a hospital
stay of 1-3 days. In comparison, gastric bypass surgery usually calls
for a 5-8 day stay in the hospital.
Gastric bypass surgery
patients can expect to lose 70-75% of their body fat in an 18-month
period, while lap band surgery patients usually lose about 50-60% of
their excess weight.
Both of these procedures can be reversed, but the reversal of lap band surgery is much easier.
Weight
loss experts rarely recommend malabsorptive procedures now, because of
the wide range of problems they can cause, especially those related to
malnutrition and nutritional deficiencies.
Of course, you should
talk to your doctor about the pros and cons of bariatric surgery before
you make a decision. And keep in mind that the long-term success of your
surgery will depend on your ability to change your diet and lifestyle
permanently.
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