How much impact does weight have on heartburn / GERD?

Obesity and being overweight can increase the risk of developing gastroesophageal reflux disease (GERD) and can worsen the symptoms of existing GERD. There are several reasons why weight can affect heartburn and GERD:

1. Increased abdominal pressure: Excess weight can increase the pressure in the abdomen, which can push the stomach contents back up into the esophagus, leading to heartburn and acid reflux.

2. Relaxation of the lower esophageal sphincter (LES): Obesity can weaken the LES, which is a muscle that acts as a valve between the esophagus and stomach. When the LES is weak, it allows stomach contents and acids to flow back up into the esophagus.

3. Increased production of stomach acid: Obesity has been associated with increased levels of stomach acid, which can contribute to the development of GERD and heartburn.

4. Delayed gastric emptying: Obesity can slow down the process of gastric emptying (the emptying of food from the stomach), which can increase pressure on the stomach and contribute to heartburn and reflux.

5. Hiatal hernia: Obesity is a risk factor for developing a hiatal hernia, a condition in which the upper part of the stomach protrudes through an opening in the diaphragm. Hiatal hernias can worsen the symptoms of GERD.

Weight loss can often help improve the symptoms of GERD and heartburn, especially in combination with other lifestyle changes such as avoiding trigger foods, elevating the head of the bed, and taking over-the-counter or prescribed medications. Consulting with a healthcare provider can help determine the best approach to managing GERD if you are obese or overweight.