Which of the following is NOT a common risk factor for developing GERD?

The correct answer identifies that being under 30 years of age is generally not considered a common risk factor for developing gastroesophageal reflux disease (GERD). GERD is more frequently associated with risk factors that increase intra-abdominal pressure or affect the lower esophageal sphincter (LES) function.

Obesity is widely recognized as a significant risk factor because excess body weight can increase abdominal pressure, leading to the relaxation of the LES and promoting acid reflux. Similarly, a high-fat diet can exacerbate GERD symptoms as fats are known to relax the LES, allowing for greater acid reflux.

Smoking is another established risk factor; it can impair the function of the LES, leading to increased acid exposure in the esophagus. In contrast, individuals under the age of 30 typically have fewer occurrences of GERD compared to older adults, who may experience more esophageal motility issues or anatomical changes, making them more susceptible to the condition.