For decades, refrigerating food has been seen as a smart way to preserve freshness — including potatoes. However, scientists have discovered that storing potatoes in the fridge can trigger a hidden health risk, especially for older adults who regularly fry or roast them. When chilled, potatoes undergo a process called “chill sweetening,” which breaks down starch into simple sugars. This might not sound dangerous, but when these sweetened potatoes are cooked at high temperatures, a harmful chemical called acrylamide forms.

Acrylamide develops when these sugars react with an amino acid called asparagine during frying, baking, or roasting. This compound can’t be seen or tasted, but repeated exposure may increase cancer risks. Health authorities like the World Health Organization and the European Food Safety Authority have issued warnings, particularly for children, seniors, and people with compromised immune systems. While an occasional serving of fried potatoes isn’t a major concern, frequent consumption of improperly stored and cooked potatoes can raise long-term health risks.

Acrylamide isn’t only found in potatoes — it can also develop in heavily toasted bread, packaged snacks, baked cookies, and deep-fried pastries. Because of this, food regulators monitor acrylamide levels in processed foods. But at home, many people are unaware that their storage and cooking habits might unintentionally increase exposure. That’s why awareness and simple habit changes in the kitchen are so important — especially as we age and become more vulnerable to food-based toxins.

Fortunately, preventing acrylamide is simple: never refrigerate or freeze raw potatoes. Instead, store them in a dark, dry place like a pantry or a wooden drawer with airflow. Avoid direct sunlight, and use paper or mesh bags rather than plastic to prevent moisture buildup. If a potato has sprouted, turned green, or smells off, it’s best to discard it, since these are signs of solanine, another naturally occurring toxin that can cause illness if consumed in large amounts.

By making thoughtful choices in how we store and prepare potatoes, we can still enjoy this affordable and nutritious food without risking our health. With just a little care and attention, your pantry habits can help protect your well-being — proving that even the smallest decisions matter in the long run.