Can you still eat the rest of an orange if part of it has spoiled?

Generally, it is not recommended to eat an orange if it has started to rot. Mold may have already spread to parts that appear intact. Only when there is minor physical damage without any signs of mold can it be cautiously consumed. If in doubt, it is advisable to consult a healthcare professional promptly. Detailed analysis is as follows:

If the orange has only suffered slight surface damage due to impact, with no signs of mold, unpleasant odor, or flesh decay, and the injury occurred recently, it may be safely consumed after thorough washing. Such physical damage does not promote mold growth, and the nutritional components of the pulp remain unaffected. Moderate consumption will not harm health.

However, if the orange shows signs of decay such as mold spots, soft and sticky flesh, or emits a sour or alcoholic smell—even if the damaged area is small—it should not be eaten. Harmful substances produced by molds may have penetrated into areas of the fruit that appear normal. Consuming such fruit may cause gastrointestinal discomfort like nausea, vomiting, or diarrhea. Long-term intake could potentially damage liver function.

When selecting and storing oranges, avoid impacts and injuries. Discard any spoiled fruit immediately—do not take risks by consuming them. Carefully inspect the flesh before eating to ensure there are no signs of mold or unusual odors. If gastrointestinal symptoms occur after consuming spoiled oranges, seek medical attention promptly to ensure food safety.