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Since at least 5,000 years ago, people have enthusiastically eaten garlic. Its pungent, slightly spicy flavor infuses curries, pastas, stir-fries and even the occasional dessert. But these delicious dishes can come with an aftershock: the sometimes off-putting aroma of garlic breath that lingers for hours afterward. So why do people love the taste of garlic, but hate the resulting garlic breath?
Chopping garlic releases a heady mix of chemical compounds called sulfides, said Sheryl Barringer, professor and department chair of food science and technology at The Ohio State University. These volatile molecules are what give garlic its "distinctive, pungent garlickiness," she said. When we cook garlic, the sulfide molecules rise into the air and fill the room with their pleasing aroma. Then "we put it into our mouths, the volatiles go up into our nose, [and] the smell is really what makes us like it," Barringer told Live Science.
Garlic - Appeal - Something - Health - Benefits
Garlic's initial appeal may have something to do with its potential health benefits, said Wilfredo Colón, professor and department head of chemistry at Rensselaer Polytechnic Institute in Troy, New York. There's some evidence that the compounds in garlic can help lower blood pressure and offer antimicrobial effects. Those benefits may cause us to subconsciously crave garlic, Colón told Live Science. At least until it turns on us, that is. [Why Does Slicing Onions Make Me Cry?]
Most meal-induced bad breath comes from leftover food particles decaying in the crevices of the oral cavity. But true garlic breath doesn't get its start until the food hits your stomach, Barringer said. There, gastric juices break down the garlic further, releasing sulfides and other vitamins and minerals. Most of...
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