Black tea vs. green tea! Guess who is the fat burning king

Exercise is the best way to lose weight, but modern people are too lazy to move and love to eat, so they come up with various lazy diet weight loss methods from time to time. Recently, the more popular ones are green tea, which can increase the fat burning rate, and black tea, which is believed to reduce edema. As both are tea drinks, which one, the green tea or the red tea, is better for weight loss? Let the experts analyze it!

The argument supporting the weight loss effect of green tea is that green tea is rich in catechins, tannins and polyphenols, and without going through the fermentation process, it can retain most of the nutrients, inhibit the absorption of fat and sugar, and help break down and burn fat. Those who agree that black tea can help with weight loss believe that the caffeine it contains can break down fat, increase fat burning ability, and promote water metabolism.

Green tea with catechins for sports and fat burning ranks first

Liu Zhenfang, chairman of the Obesity Research Society of the Republic of China and professor of the Department of Health and Nutrition at Chang Gung University of Science and Technology, said that both green tea and black tea contain catechins and caffeine, but when comparing the effects of the two ingredients on weight loss, catechins are more effective. A research analysis found that among all types of tea drinks, green tea contains the highest proportion of catechins, followed by oolong tea, and black tea ranks only third, with a content far less than green tea. This also shows that green tea may be more effective in weight loss than black tea.

Professor Liu Zhenfang pointed out that catechins and tannins are both polyphenols, but tannins, which account for a very small proportion, play a role related to "taste" and are the key to affecting astringency, but have no effect on weight loss. On the other hand, catechins, which account for the highest proportion of the ingredients, have been proven in recent studies to have the effect of maintaining fat metabolism, increasing fat burning rate during exercise, and making people lose weight faster.

A study published in the Journal of Nutrition found that subjects who drank 500cc of green tea (containing 625 mg of catechins) before 180 minutes of moderate-intensity exercise three times a week for 12 weeks reduced their total abdominal fat by 7.4% and their abdominal subcutaneous fat by 7% more than those who exercised normally. Another study published in the American Journal of Clinical Nutrition also showed that taking catechins before exercise can increase fat energy consumption during exercise by 17%.

Caffeine drains away weight and black tea has poor fat burning effect

The catechin content of black tea is far less than that of green tea, but what about caffeine? Professor Liu Zhenfang said that caffeine has the effects of promoting metabolism and diuresis. It can increase the speed and utilization of body fat metabolism in a short period of time, save sugar consumption, enhance endurance and muscle explosiveness, and prolong running endurance. It is one of the assistants for athletes to improve their athletic performance.

However, the International Olympic Committee (IOC) also has restrictions on the amount of caffeine that athletes can consume to avoid undermining the principle of fair competition. If the caffeine content in the urine exceeds 12 mg per milliliter, it is considered a violation. If you consume 700 mg of caffeine in 30 minutes, you will exceed the limit. If ordinary people consume too much, it will also cause side effects such as accelerated heartbeat, palpitations, and frequent urination.

As for the caffeine contained in black tea, Professor Liu Zhenfang said that the caffeine content of 500cc of green tea is about 39 mg, and the caffeine content in black tea is not particularly high. It is difficult to scientifically measure its effect on weight loss. Even if it helps to burn fat a little, it may require "very large" drinking to be enough. In comparison, green tea, which has a higher proportion of catechins, is more effective in burning fat.