Gastroesophageal reflux disease, or GERD, affects roughly 14% of the global population, making it one of the most common digestive conditions in the world. In the United States, the numbers are even higher: an estimated 40% of Americans experience GERD symptoms at some point, with 10 to 20% dealing with them on a weekly basis.
Global and Regional Prevalence
A large-scale systematic review with meta-analysis estimated the global pooled prevalence of GERD at about 14%. But that number masks significant regional variation. North America has the highest rate at roughly 19.5%, while Latin America and the Caribbean sit at the lower end near 13%. At the country level, the spread is even wider, ranging from about 4% in China to over 22% in Turkey.
These differences reflect a mix of dietary patterns, obesity rates, diagnostic practices, and how willing people are to report symptoms. Countries with higher rates of obesity and more Westernized diets tend to see more GERD.
GERD Is Getting More Common
GERD is not holding steady. Global cases nearly doubled between 1990 and 2021, rising from about 451 million to 826 million. That growth is projected to continue, with prevalence expected to keep climbing through at least 2036.
The obesity pandemic is a major driver. Excess abdominal fat raises pressure inside the abdomen and increases the risk of a hiatal hernia, both of which push stomach acid upward. Fat tissue also releases inflammatory compounds that weaken the muscular valve between the esophagus and stomach. These effects are especially pronounced in countries undergoing rapid shifts toward processed, calorie-dense diets. Notably, obesity that begins in childhood appears to carry a greater lifetime risk of GERD than obesity that develops in adulthood.
Who Gets GERD: Age and Sex Patterns
Men and women develop GERD symptoms at nearly identical rates. Large surveys consistently show no meaningful gap, with one systematic review reporting symptom prevalence of 19.4% in women and 18.9% in men. The difference lies in what happens inside the esophagus. Men are more likely to develop visible damage to the esophageal lining (erosive disease), Barrett’s esophagus, and esophageal cancer. Women are more likely to have symptoms without visible erosion.
Age plays a clearer role. Erosive reflux disease becomes more common in both sexes as they get older, with a notable jump in women after age 50. By age 80, the rates of esophageal damage in women catch up to those in men. Being over 60 is also a significant risk factor for Barrett’s esophagus compared to being under 40.
How Common Is Reflux in Infants and Children
Reflux is extremely common in young babies and is usually not a disease. About 50% of infants under two months old have reflux, and the rate peaks at 60 to 70% between three and four months. Most outgrow it by their first birthday, when only about 5% still have symptoms. This is normal, harmless spitting up driven by an immature digestive system rather than true GERD.
After age one, diagnosed GERD in children is rare, occurring in fewer than 1 in 1,000 children. Pediatric GERD does exist, but the dramatic drop-off after infancy means most parents of spitty babies can expect things to resolve on their own.
When Occasional Reflux Becomes GERD
Almost everyone experiences acid reflux now and then, so the line between “normal” and GERD matters. The widely used Montreal definition sets the threshold at moderate to severe symptoms occurring at least one day per week. If heartburn or regurgitation is frequent enough to be bothersome and is disrupting your daily life, eating, or sleep, that crosses into GERD territory.
This is worth knowing because many people normalize frequent heartburn, assuming it’s just something they have to live with. The prevalence numbers suggest that a large share of the population meets the diagnostic threshold without realizing they have a treatable condition.
Long-Term Complications
Most people with GERD will not develop serious complications, but chronic, unmanaged reflux does carry risks. About 5% of people with long-standing GERD develop Barrett’s esophagus, a condition where the lining of the lower esophagus changes in response to repeated acid exposure. Barrett’s esophagus is significant because it’s a precursor to esophageal adenocarcinoma, though the progression from Barrett’s to cancer is itself uncommon.
Risk factors for Barrett’s include being male, being over 60, and having had GERD symptoms for many years. This is one reason persistent reflux is worth managing rather than simply tolerating.
The Economic Scale of GERD
The sheer number of people affected makes GERD expensive at a population level. The United States spends more than $10 billion annually on diagnosing and treating the condition. Per patient, the average annual cost is nearly $7,000 when factoring in medications, doctor visits, and procedures. For working adults, GERD adds an average of about $3,355 in costs per employee, with roughly a fifth of that coming from lost productivity and missed work rather than direct medical spending.
These costs reflect how chronic the condition is. GERD is rarely a one-time problem. Most people manage it over years or decades, and the cumulative expense of medications, follow-up visits, and occasional procedures adds up quickly across hundreds of millions of cases worldwide.