Several conditions can result in nausea and vomiting after you eat lunch, some of which may require medical attention. Most cases can be treated at home with temporary lifestyle changes. If you feel nausea or vomit consistently after meals, talk with your doctor to rule out health conditions that may be causing the problem. Keeping a journal that includes the foods you eat, when the symptoms appeared and what you were doing after lunch can provide your doctor with clues for a diagnosis.
Causes
Nausea and vomiting after you eat lunch can be the result of many conditions, some of which are serious and some that aren't. Food poisoning, food allergies or intolerances, pregnancy, stress, indigestion and sensitivity to strong smells are several common causes. Celiac disease, Crohn's disease and acid reflux are chronic conditions that cause nausea and vomiting after a meal. Some ear, brain, mental health and heart conditions manifest with nausea or vomiting as well. Serious health issues that contribute to both include heart attacks, brain tumors, cancer and liver or kidney disorders.
Treatment
Most cases of nausea and vomiting subside on their own with some simple treatment methods. Slowly sipping water, eating bland foods, such as crackers or bread, and resting after lunch are all ways that can reduce your symptoms. In the future, try eating smaller meals, avoid greasy and fatty foods and don't mix hot and cold foods in the same meal.
When to Call the Doctor
Some cases of nausea and vomiting indicate a more serious health problem and your doctor should be notified. Bloody vomit, headache or stiff neck, confusion, severe stomach pain, lethargy, vomiting combined with a fever or diarrhea and a temperature over 101 degrees are all conditions that should prompt you to call your physician. If you cannot reach your doctor, head to the nearest emergency room for treatment.
Children
If your child experiences nausea or vomits after she eats lunch, it is imperative to watch her closely as a call to her pediatrician may be necessary. For children under 6, vomiting that lasts several hours, symptoms of dehydration, a fever over 100 degrees and accompanying diarrhea are problems that warrant a call to the doctor. For children over age 6, watch for vomiting that lasts more than 24 hours, vomiting with diarrhea, signs of dehydration and a fever over 102. Treatment of nausea and vomiting for children is similar to that for adults, including bland foods, smaller meals and resting after eating lunch.
