Ghrelin is commonly known as “the hunger hormone,” and, as the name suggests, it’s a hormone created by your gastrointestinal tract to let your brain know when you’re hungry. When you eat glucose,  this hormone is suppressed, i.e., you feel less hungry.

However, fructose doesn’t suppress ghrelin like glucose, meaning you can keep eating and still feel hungry. Fructose occurs naturally in fruits, but the difference between an apple and, say, a frozen dinner, is that the natural fiber and nutrients present in the apple act as its own appetite inhibitor. Foods and drinks with high-fructose corn syrup (55% fructose) or added sugar (50% fructose) do not contain the same fiber and nutrients as fruit. Eat all the fruit you like, but avoid sugar-added juices, table sugar and HFCS as much as possible.

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