The strange truth about calories and why food labels are wrong

PRJWHE Box of Crackers Nutrition Facts - USA

Calories thankfully feel simple when you’re navigating the complex world of nutrition. Calories, a simple measure of the energy contained in our food, are at the heart of conventional weight management advice. If you eat too much or don’t burn enough, you will gain weight. Want to be slim? Eat less and move more. As the saying goes, “Calories are calories, calories are calories.” But dig a little deeper and you’ll see it’s not so simple.

This idea that the body is the furnace and food is its fuel was popularized by Wilbur Atwater in the 19th century. He deduced that there are three main ingredients, or macronutrients, that allow him to calculate the calorie content of any food. Protein and carbohydrates contain 4 calories per gram, and fat contains 9 calories. Combined, the result informs the calorie content of the food label. wherever.

But when we think about how food is consumed, we face the first problem. A geneticist at the University of Cambridge, Why Calories Are Not Counted. Oranges are primarily carbohydrates, namely sugar. “When you drink orange juice, your body absorbs sugar.” [quickly] Because it doesn’t need to be digested,” Yeo says. However, eating orange pieces requires energy for your digestive system to process the fiber and extract the sugars. “Physiologically, the body will do very different things with exactly the same caloric intake,” Yeo says.

For example, orange juice causes a more rapid rise in blood sugar than an orange part, which regularly causes blood sugar spikes.

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