Here is how to make French fry healthier. You know that french fries are high in calories but might cause cancer too. Researchers are in-creasingly concerned about acrylamide, a suspected carcinogen that forms when carb rich foods such as potatoes are fried or baked at high temperatures. To reduce this risk, soak your spuds. British food scientists found that bathing raw, sliced potatoes in water for 2 hours before frying reduced acrylamide content by 48%. A 30-minute soak dropped levels by 38% and a 30-second rinse resulted in a 23% decrease.