Coffee ground from coffee beans is low in fat and protein, which is favored by dieters because it can promote metabolism and raise heart rate. Some people use thyroid hormone to lose weight, and the principle is the same as coffee, which promotes metabolism in new towns and increases metabolic rate.

Extended data:

Caffeine must reach a certain amount to achieve the effect of weight loss, and a cup of coffee contains tannic acid, fatty acids, vitamins, protein, fat and other substances besides caffeine, and the caffeine content used for weight loss is not high. The increase of metabolic rate will also lead to other problems, the biggest of which is heart problems. The heart is in a state of high load for a long time, which is prone to problems such as cardiac insufficiency.

"Just a cup or two of coffee won't help you lose weight. If you want to lose weight, you need a lot of caffeine, and the side effects of eating a lot of caffeine outweigh the effects. " Yang Jingge commented on the coffee diet. "So, this method does more harm than good."

References:

Don't try it at random: drinking black coffee does more harm than good-People's Daily Online