Once a fruit starts to rot or show mold, it’s likely that bacteria and fungi have already spread deep inside. The biggest danger comes from aflatoxin — a highly toxic substance produced by mold and classified by the WHO as one of the most potent carcinogens. Even minimal exposure to aflatoxin over time can severely damage the liver and lead to liver cancer.

The toxin doesn’t always stay confined to the moldy spot — it can spread invisibly through the whole fruit. If a fruit smells strange, tastes off, feels slimy, or has odd discoloration, it’s safest to throw it away.

3. Fruits That Are Chemically Ripened

Fruits like bananas, papayas, and mangoes are often artificially ripened using ethylene gas or unregulated chemicals to speed up delivery and shelf life. While some ripening agents are considered safe, many vendors use illegal or poorly regulated substances.

Chemically ripened fruits usually have an overly bright and uniform yellow skin that looks unnatural. Inside, the flesh may be watery, mushy, oddly fragrant (or lacking fragrance), and sometimes have a bitter or off taste.

These chemicals not only degrade the fruit’s nutrients but may interfere with natural enzymes, affect hormone balance, harm the liver and kidneys, and increase the potential for cancerous changes in cells.

Your best bet is to choose naturally ripened fruits — they might not look perfect, but they’re safer and offer a more genuine flavor.