Eating healthy food and exercising is the best way to lose weight, but there are also certain products that can speed up the process.
It has long been known that green tea can help us to lose weight, but researchers have demonstrated for the first time that black tea may promote weight loss and other health benefits by changing bacteria in the gut.
The study was conducted by UCLA scientists and published in the European Journal of Nutrition.
The study found that both black and green tea changed the ratio of intestinal bacteria.
The percentage of bacteria associated with obesity decreased, while bacteria associated with lean body mass increased.
Previous studies indicated that chemicals in green tea called polyphenols are absorbed and alter the energy metabolism in the liver. The new findings show that black tea polyphenols, which are too large to be absorbed in the small intestine, stimulate the growth of gut bacterium and the formation of short-chain fatty acids, a type of bacterial metabolites that has been shown to alter the energy metabolism in the liver.
“It was known that green tea polyphenols are more effective and offer more health benefits than black tea polyphenols since green tea chemicals are absorbed into the blood and tissue,” said Susanne Henning, the study’s lead author and an adjunct professor at the UCLA Center for Human Nutrition, which is part of the David Geffen School of Medicine at UCLA.
“Our new findings suggest that black tea, through a specific mechanism through the gut microbiome, may also contribute to good health and weight loss in humans.”
“The results suggest that both green and black teas are prebiotics, substances that induce the growth of good microorganisms that contribute to a person’s well-being,” she said.
According to Dr. Zhaoping Li, director of the UCLA Center for Human Nutrition, chief of the UCLA Division of Clinical Nutrition and the study’s senior author, both green and black tea can be good for one’s health because they prevent obesity.
“For black tea lovers, there may be a new reason to keep drinking it,” she said.