The acid gets mixed up with other stomach secretions so it levels out at around pH 1–3, says The Institute Of Human Anatomy. Thankfully, all that mucus we mentioned acts as a physical barrier ...

Acid reflux is a common and painful condition caused by stomach acid irritating the esophagus. Foods and drinks like citrus, tomatoes, fatty foods, coffee, tea, biscuits, cookies, and fried foods ...

Experts recommend sleeping on your left side, as this position prevents stomach acid from traveling back into the esophagus. The anatomy of the stomach ensures that acid stays confined to the ...