Eating sprouted potatoes can pose health risks due to increased concentrations of natural toxins called glycoalkaloids, including solanine and chaconine. These compounds, concentrated mainly in the sprouted eyes and green parts, can cause nausea, stomach issues, neurological symptoms, and in severe cases, poisoning.
Potatoes that develop sprouts or green patches indicate rising levels of harmful glycoalkaloids, natural pesticides the tuber produces to protect itself. These toxins, solanine and chaconine, increase significantly as the potato sprouts or its skin greens due to light exposure or poor storage.
Consuming sprouted potatoes—even in small amounts—can lead to symptoms such as nausea, vomiting, diarrhea, headaches, dizziness, and abdominal pain. In extreme cases, neurological effects like hallucinations or paralysis may occur. Cooking only slightly reduces these toxins, so large amounts or heavily sprouted potatoes should be avoided.
Safe consumption requires removing sprouts and green parts thoroughly if the potato is still firm and not excessively sprouted. Deep peeling and discarding sprouted areas help lower toxin intake. However, potatoes that are soft, shriveled, or heavily sprouted should be discarded entirely.
Experts advise storing potatoes in cool, dark, well-ventilated places, away from onions and moisture, to prevent sprouting and toxin buildup. Proper storage and careful selection are essential for safety.
Key Highlights:
Sprouted potatoes produce higher levels of toxic glycoalkaloids: solanine and chaconine.
Symptoms of poisoning include nausea, stomach upset, dizziness, and neurological issues.
Cooking reduces toxins minimally; heavily sprouted or green potatoes are unsafe.
Remove sprouts and green skin areas if potato is still firm before cooking.
Discard potatoes that are soft, wrinkled, or extensively sprouted.
Store potatoes in cool, dark places away from onions and moisture.
Awareness and caution prevent solanine poisoning and ensure food safety.
Sources: Times of India, NDTV Food, Healthline, The Week, Onmanorama