Gas refers to air that builds up in the digestive system.
Doctors use this term because gas is a normal part of digestion. Everyone has gas, but sometimes it builds up more than usual and causes discomfort. Gas is a symptom, not a diagnosis.
Doctors most often use gas because of common causes such as:
Digestion of certain foods, especially beans, dairy, or high-fiber foods
Swallowing air while eating, drinking, or talking
Constipation or slow digestion
Food intolerance or sensitivity
Stress or anxiety, which can affect digestion
Gas is very common and usually harmless.
People with gas may notice:
Pressure in the stomach or abdomen
Burping
Passing gas
Gas pain often changes with movement or bowel activity.
Digestion naturally produces gas. Certain foods, large meals, or eating quickly can increase gas buildup.
Gas can shift through the intestines, which is why discomfort may move rather than stay in one spot.
Constipation or muscle tension can trap gas, leading to pressure and discomfort.
Stress can slow digestion and increase gut sensitivity, making gas more noticeable and uncomfortable.
Doctors may evaluate gas using:
Symptom patterns and timing
Diet and bowel habit review
Physical exam
Testing only if gas is persistent or severe
Most gas does not require medical testing.
Gas is usually managed by a primary care doctor.
Gastroenterologist – for ongoing gas with pain, bloating, or bowel changes
Specialist care is uncommon unless symptoms persist.
For many people, next steps may include:
Identifying food triggers
Eating more slowly
Improving bowel regularity
Stress management
Short-term remedies if recommended
Gas often improves with simple habit changes.
This page is for educational purposes only.
It does not diagnose any condition.
Always follow guidance from a qualified healthcare professional.