The reason behind why fast foods are so addictive is because it activates the brain's reward system, releasing dopamine associated with pleasure.
It developed for appealing flavours and sensations which build a demand for these foods, making it difficult to limit their consumption.
Fast food firms use flavor enhancers like MSG to enhance savory and umami flavors, enhancing the reward system and making it hard to resist.
It contains high sugar and saturated fat that triggers dopamine production, leading to overconsumption.
Their packaging and advertising often use bright colors, appealing imagery, subconsciously influence our idea of the food, making it more desirable.
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