Green coffee bean extract: Does it really help you lose weight? It’s being heralded as a revolutionary new weight- loss product that can melt pounds without the need for diet or exercise. Although it clearly sounds too good to be true, green coffee bean extract is flying off shelves at natural food stores and is in high demand online.“It’s among the top sellers right now,” said Stacey- Anne Bistak, who works at Noah’s Natural Foods in Toronto. In September, after being taken to task by critics for calling green coffee bean extract a “miracle” product, Dr. Mehmet Oz conducted his own experiment on the supplement. Green Coffee Bean Extract is one of them. Green coffee extract was promoted by Dr.Using 1. 00 female volunteers, Oz said he found women who took the extract lost an average of two pounds in two weeks. Women who took a placebo lost an average of one pound during those two weeks. Convinced? You just might want to reserve judgment. What is it? Green coffee beans are simply beans that haven’t been roasted. Green coffee beans are coffee beans that have not been roasted. Roasting green coffee beans not only changes the color of the coffee beans but also removes a compound. Green Coffee Beans May Aid Weight Loss. Supplement Linked to Weight Loss in Small, Early Study. The Skinny on Losing Weight with Green Coffee Beans. Green Coffee Beans for Weight Loss? Are you familiar with a study showing that extracts of green coffee beans promote weight loss? Learn about green coffee bean extract. Can Green Coffee Bean Extract Help You Lose. Green coffee beans contain chlorogenic acid, which proponents say slows the release of glucose into the body after a meal, thereby promoting weight loss. When coffee beans are roasted, most of the chlorogenic acid is lost. The extract, made with chlorogenic acid, is converted into a capsule form before being sold to consumers. And it doesn’t come cheap. A month’s supply can cost between $2. The claims. Just type “green coffee bean extract” into an Internet search and you’ll be inundated with companies advertising its ability to help you lose weight. Look a little closer and you’ll see that many of those sites reference one particular study to back up their claims. That study, published in the journal Diabetes, Metabolic Syndrome and Obesity, was conducted on eight men and eight women. They were each given a high dose and a low dose of green coffee bean extract, as well as a placebo, in three separate six- week- long experiments. Participants were encouraged to consume a similar number of calories each day during the course of the experiment. After 2. 2 weeks, or about five months, the researchers found that, on average, participants lost more than 1. It has a significant weight loss” associated with it, according to Dr. Joe Vinson, a professor of chemistry at the University of Scranton in Pennsylvania and lead author of the study. The catch. Although the study is widely cited as proof green coffee bean extract works, nutrition and obesity experts are concerned over the validity of the results. They highlight several problems with the study, notably the fact it has an odd, unconventional design and that it involved very few people. They also point out that study participants lost weight during the placebo phase of the trial, which suggests green coffee bean extract was not responsible for their weight loss. For instance, participants may have felt encouraged to slim down because their weight and diet were monitored as part of the study.“Clearly there’s nothing magical about it,” said Dr. Arya Sharma, a professor of medicine and chair of obesity research and management at the University of Alberta. But even if you still want to believe the study results, consider that it says people can lose a significant amount of weight without altering their caloric intake or physical activity levels. It’s impossible.“Usually when studies break the physical laws of the universe, there’s usually something wrong with the study itself,” said Dr. Yoni Freedhoff, medical director of Ottawa’s Bariatric Medical Institute, who writes Weighty Matters, a popular blog on nutrition issues. Under “Footnotes” in the study, the authors note that they have “no conflicts of interest in this work.” That doesn’t tell the entire story. Although Vinson is listed as the lead author of the study, he actually didn’t do any of the research. The study was conducted in India. Vinson examined the data and wrote the study paper. While Vinson notes that the green coffee bean extract used in the study was supplied by Applied Food Sciences Inc., a company based in Texas, he didn’t mention that the company also paid him to write the study. When asked about this potential conflict of interest, Vinson said that he doesn’t gain financially if the company sells a lot of product and that the journal didn’t require him to disclose the relationship. But the lack of disclosure is serious because it could be misleading to those who read it, Sharma said. Report Typo/Error. Follow Carly Weeks on Twitter: @carlyweeks. Green Coffee Beans for Weight Loss? Are you familiar with a study showing that extracts of green coffee beans promote weight loss? If so, do you think taking this supplement is a safe way to lose weight?– June 2. You’re likely referring to a small study that reported impressive weight losses in a group of 1. All the participants, eight men and eight women between the ages of 2. Between each six- week phase there was a two- week “washout” period during which the participants took no supplements. Results showed that they lost an average of 1. No side effects were reported. Joe Vinson, Ph. D., a professor of chemistry at the University of Scranton, conducted the study and has said he is planning a larger one with 6. No diet was involved in this study. In fact, the participants’ average intake was about 2,4. The study was done in India and was sponsored by the manufacturer of the product used. Dr. Vinson has commented that the caffeine in the extract probably was not responsible for the weight loss seen in the study. Instead, he suggests that the green coffee bean extract may have worked by reducing the body’s absorption of fat and glucose, and that the key chemical player was chlorogenic acid, a compound present in green coffee beans. At these doses, chlorogenic acid may inhibit release of glucose, which would promote weight loss. A 2. 00. 6 study in rats showed that chlorogenic acid significantly influences glucose metabolism; it has also been found to boost the metabolism of fat in the liver in mice. However, you shouldn’t assume that you can get similar weight loss results from drinking coffee. If chlorogenic acid was responsible for the weight loss seen in this study, you would be out of luck – roasting removes most of the chlorogenic acid from the beans. And if you’re tempted to try green coffee bean extract supplements, you should know that they’re extremely bitter (ironically, thanks to the chlorogenic acid) and, according to Dr. Vinson, need to be taken with a lot of water before a meal. While the results of the small study are intriguing, I’m skeptical of any magic bullet for weight loss, particularly one that doesn’t require any behavioral change (such as eating less and exercising more). There’s still a lot to learn about green coffee bean extracts. They may not sustain the losses seen, and we don’t even know if long- term use of the supplement is safe. I advise putting your interest in this product on hold until we know more. In the meantime, to lose weight while maintaining or improving your health, I recommend following an anti- inflammatory diet coupled with mindful eating, calorie- consciousness and daily physical activity. Andrew Weil, M. D.
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