Feeling bloated is usually caused by excess gas or air in the gastrointestinal tract, which leads to a sensation of fullness, tightness, or swelling in the abdomen. This can happen when undigested food gets broken down, when you swallow more air than usual (such as eating or drinking too fast, chewing gum, or smoking), or due to gas produced during digestion. Other common causes include:

• Overeating, which stretches the stomach and causes discomfort.
• Food intolerances (e.g., lactose or gluten intolerance) that produce gas and bloating.
• Hormonal changes, especially in women (e.g., menstrual cycle).
• Constipation, which leads to food buildup and gas accumulation.
• Certain medical conditions like irritable bowel syndrome (IBS), inflammatory bowel disease, or infections.
• Stress and anxiety affecting gut motility and sensations.
• Fluid retention from dietary salt, hormonal changes, or underlying health issues.

In some cases, bloating might be related to more serious conditions such as liver disease, ovarian cancer, or pancreatic insufficiency, but these are less common. In summary, bloating is usually related to gas buildup due to dietary habits, digestive issues, or hormonal influences. If bloating is persistent, severe, or accompanied by other symptoms, it is advisable to consult a healthcare provider for proper diagnosis and treatment.