WHEN BAD FOODS TASTE GOOD
Why do foods that are bad for you taste so good? Lots of people like salads, sure, but you dont hear them talking about "cravings" the way people wax eloquent about Reeses Peanut Butter Cups, DoveBars or Moms macaroni and cheese.
When it comes to comfort foods, were talking starch, sugar, fat or all three. It seems there are evolutionary reasons, as well as psychological and cultural ones, that we like fat and sugar, says Dr. David Klurfeld, chair of the department of nutrition and food science at Wayne State University. A sweet tooth is natural, he says, because "anything in nature thats sweet is harmless. Anything thats harmful is likely to be bitter or sour."
In addition, researchers think that back in cave-dwelling times, when food was scarce and we needed calories, human beings developed a preference for high-fat food. Nowadays, this preference is doing us no good.
One of the joys of fat, says Klurfeld, is its "mouth feel."
For example, high-quality chocolate "liquefies while its dripping down your teeth. Its sensual."
Same for potato chips: The oil coats the inside of your mouth and leaves a prolonged aftertaste. Fat by itself, however, has very little taste. Try putting a few drops of corn oil on your tongue.
Favorite foods do seem to vary by the eaters gender, Klurfeld says. American women like chocolate best, while men go for salt and high-fat meats.
I started out seeing sugar as a "bad food," but that wasnt quite fair. Yes, sugar is empty calories, and can cause tooth decay. But despite the persistent belief that sugar makes children hyperactive, Klurfeld says there is no credible evidence for this myth.
"Sugar actually has a calming effect," he says. "That is well-documented. All carbohydrates have it, but sugar has a more pronounced effect because its absorbed more rapidly."
Thats one more reason so many people go for Little Debbies when the stress is too much. With the average American consuming more than a third of a pound of sugar a day, youd think wed be a lot calmer.
The usual advice on what to do about cravings for fat and sugar is to eat less, and eat sweets that are less sweet. Adam Drewnowski, formerly at the University of Michigan and now head of the University of Washingtons nutrition program, believes if we ate more flavorful chocolate, such as dark chocolate, wed want smaller portions.
And Drewnowski has also found that infusions of opiate-blocking drugs will decrease preferences for foods high in fat and sugar.
He speculates that opiate blockers interfere with the ability to experience pleasure, including the pleasure derived from the tastes and textures of foods. But since we live to eat, not just eat to live, isnt turning off our pleasure centers a bit drastic? Jane Slaughter
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