Whether it's on a giant billboard, in a cheesy commercial, or filling a glossy page of a magazine, unhealthy temptation surrounds us every day.
Typically, frequently-advertised foods are the very ones we crave: foods high in ingredients like sugar, fat, and salt. Specifically, fast food restaurants' advertisements and menus send environmental cues, which can trigger addictive overeating. Highly-processed fast food can become a craving, which is seen in statistics of obesity.
But just what makes certain ingredients so addicting? Why does it feel like we need more and more of them, the more we eat them?
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