Digestion is the process of breaking down food into smaller pieces so that it can be absorbed by the body. Digestion begins in the mouth with chewing and saliva. The food then moves down the esophagus to the stomach where it is mixed with stomach acid. From there, it moves into the small intestine where nutrients are absorbed into the bloodstream. Finally, any indigestible material moves into the large intestine before being eliminated as waste.
There are a number of different factors that can affect digestion, including stress, diet, and medications. For example, stress can lead to problems such as heartburn or indigestion. And certain foods (such as fatty or spicy foods) can also trigger digestive problems. Some medications (such as antacids or antibiotics) can also interfere with digestion.
There are a number of common digestive disorders that can affect people of all ages, including:
– Heartburn: This is a condition in which stomach acid backs up into the esophagus, causing pain and irritation. Heartburn is often worse after eating or lying down.
– Indigestion: This is a general term for discomfort or pain in the stomach area after eating. It may be accompanied by bloating, belching, and nausea.
– GERD (gastroesophageal reflux disease): This is a more serious form of heartburn that can lead to damage of the esophagus if left untreated. Symptoms include chest pain, difficulty swallowing, and regurgitation of food or liquid.