Non-organic sweet potatoes may carry pesticide residues. To minimize exposure, buy organic when possible. At the very least, make sure to wash them thoroughly and peel the skin before cooking.

8. Spoiled Sweet Potatoes Can Be Toxic
Moldy or rotten sweet potatoes can contain harmful toxins that may lead to food poisoning. Always inspect your sweet potatoes for signs of spoilage—such as a sour smell, discoloration, or visible mold—and discard any that don’t look or smell right.

Bottom Line
Sweet potatoes can be a fantastic, nutrient-rich addition to your meals. But like all foods, they’re best consumed mindfully. Keep these eight warnings in mind to enjoy their benefits while avoiding any potential risks.