While reading a neuroscience textbook, I came across an interesting story about food aversion. One of the authors had an unpleasant experience with his favorite food in an amusement park. When he was 14 years old, he wanted to snack on his favorite fried clams in the amusement park, but the food turned out to be spoiled. So within an hour he became nauseated, vomited and had the most unpleasant ride home on the bus. Since then he developed an aversion to fried clams. However, interestingly he didn't have negative feelings towards amusement parks or people he was with that day. By the time he was thirty he could dine on fried clams again. He also read a research article about mice who developed aversion to sweets when researchers gave them a drug to make them feel sick after eating sweets. Interestingly, mice also didn't develop aversion to conditions under which they ate sweets rather they developed aversion to food stimulus. Researchers found out that the food aversion develops because of associative memory. It can be also easily explained evolutionarily. An animal shouldn't be a slow learner when it comes to food, because eating poisonous food can have fatal consequences. Some people find certain food repulsive even after 50 years. Food aversion can also be serious problem for cancer patients that undergo radiation and chemotherapy when the nausea induced by their therapy make many foods unpalatable. However, food aversion has also a positive side. It can help people to end their alcoholic or cigarette dependence.