Why do I get full after a few bites?

Early satiety - feeling stuffed after a few bites - deserves more respect than most digestive complaints, because it changes what and how much you eat, and weight and nutrition follow. The everyday causes: stress and anxiety, which shut digestion down; eating too fast and swallowing air; constipation, which backs the whole system up; and acid reflux or functional indigestion, where the stomach protests early. NIDDK lists feeling full too soon among the core symptoms of indigestion. The medical list starts with gastroparesis - a stomach that empties too slowly, classically in diabetics but also after viral illnesses and without clear cause, producing early fullness, bloating, nausea, and sometimes vomiting of hours-old food. Ulcers, gallbladder problems, and thyroid slowness sit further down the list, and early satiety with unexplained weight loss is a combination providers take seriously at any age - it is one of the symptom pairs that triggers a deliberate workup. What to do: two weeks of small, slow, low-fat meals while noting how much you actually eat and whether weight is dropping; then a provider visit if it persists, especially with weight loss, vomiting, pain, or black stools - those last combinations go promptly. The workup is usually straightforward: exam, blood tests, sometimes a scope or emptying study. Meanwhile, liquid calories - soups, smoothies - sneak nutrition past a fussy stomach better than solid meals. Pymander is a free AI doctor, 24/7 by text. Describe how long this has gone on and what else changed, and it can help you judge urgency.