Is Skim Milk Making You Fat?: The Body : Details
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It's becoming widely accepted that fats actually curb your appetite, by triggering the release of the hormone cholecystokinin, which causes fullness. Fats also slow the release of sugar into your bloodstream, reducing the amount that can be stored as fat. In other words, the more fat in your milk, the less fat around your waist. Not only will low-fat milk fail to trim your gut, it might even make you fatter than if you were to drink whole, according to one large study. In 2005, researchers from the Harvard School of Public Health and other institutions studied the weight and milk consumption of 12,829 kids ages 9 to 14 from across the country. "Contrary to our hypothesis," they reported, "skim and 1% milk were associated with weight gain, but dairy fat was not."
But surely low-fat milk is better for your heart? We are often told to watch our consumption of dairy because it raises our bad cholesterol, the kind known as LDL. But LDL comes in at least four varieties, and only the smallest and densest of them are linked with heart disease. Dairy fat, it turns out, affects only the large, fluffy kind of LDL—the benign kind.
And here's a final thought: How would you feel if you opened a carton and poured a chalky, bluish-white liquid into your coffee? That's the color many nonfat milks are before powdered milk is added to whiten them—a process that brings its own problems. Any way you look at it, there's been a lot of whitewashing of skim milk's image.
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