Almost everyone has had an upset stomach at some time. It usually happens because something we ate or drank carried harmful microbes into our body.
The common causes are easy to list.
- Stale or spoiled food. Food that was kept too long, or kept uncovered, and had microbes growing in it.
- Cut fruit or food left open. Flies sit on it and leave microbes and dust behind.
- Unwashed hands. Eating without washing hands carries microbes from the hands straight into the mouth.
- Unsafe water. Water that has not been boiled or filtered.
- Eating in a hurry, or eating too much at one time. The book calls this a bad eating habit, and it also leads to indigestion.
- Fruits and vegetables that were not washed before being eaten raw.
Sample answer: “Yes. Last summer I drank a cold drink from an open glass at a fair and ate a cut fruit that had been lying in the sun. That night my stomach hurt and I felt like vomiting. I think the food had microbes on it, because it had been kept open for a long time in the heat.”