Generally speaking, the weight loss effect of green tea is better than that of black tea, because black tea is fermented by frequently picked tea leaves in contact with oxygen, and green tea is directly made into tea leaves without fermentation, so it retains many nutrients, especially catechins, which is more helpful for burning fat.
2 weight loss principle of green tea green tea contains aromatic compounds, which can dissolve fat, remove turbidity and greasy, and prevent fat from accumulating in the body. Vitamin B 1, vitamin c and caffeine contained in it can promote gastric juice secretion and help digestion and fat elimination; Drinking green tea can also increase the metabolism of body fluids, nutrients and calories, strengthen microcirculation and reduce fat deposition. Theophylline and caffeine in green tea can reduce fat accumulation and have no destructive effect on probiotics in human intestine.
3 Precautions for losing weight by drinking green tea 1. The water temperature for soaking green tea should be controlled at about 80℃-90℃, and the first water for brewing tea should be poured out.
2. Drink the brewed tea within one hour, otherwise the nutrients in the tea will slowly dissipate.
3. If you brew green tea powder, don't brew it too thick, and brew it with warm water of about 40℃ to 60℃.
It's best to drink green tea one hour after meals, and drink tea immediately after meals. Tannic acid in green tea and iron in food are easy to combine to form insoluble matter, which will affect the absorption of iron. One hour after a meal, the iron in the food is basically absorbed, and drinking tea will not affect it.
4 Weight loss principle of black tea Black tea contains caffeine, and the ability of caffeine to decompose fat can decompose fat accumulated in the body into the blood and accelerate the rate of burning fat. In addition, caffeine also has diuretic effect, which helps to dilate blood vessels, accelerate water metabolism, and make excess water and waste in the body excreted in time.