What Is the Difference Between Hunger and Food Cravings?

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In our clinic, we have many people who we try to distinguish the difference between what we call head hunger and body hunger. Head hunger is a craving you get it certain times a day when its meal time maybe when you're watching commercial for your favorite food, and it's a very specific feeling, if I don't get that particular food right now, then I will need to find it, versus body anger, body anger happens a couple hours potentially after a meal, depending what you have eaten shorter versus longer and it's almost hollow feeling, people feel a little slow down people if you are diabetic and your blood sugar is going low my even get a little and shaky and sweaty and we'd often try to distinguish when people say hunger, the difference between that head and body hunger.