Weight loss green coffee extract
If you want to shed all your excess fats and start sporting a slimmer and healthier figure, you need to be up for the challenge and commit yourself to weight loss no matter what the odds are.
Green Coffee Beans May Aid Weight Loss
Supplement Linked to Weight Loss in Small, Early Study
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">From the WebMD Archives
March 28, 2012 -- Ground green coffee beans, taken daily, seem to spur steady weight loss, according to new research.
In a small, 22-week study, researchers found that 16 overweight men and women lost an average of 17 pounds. They took the green (unroasted) coffee beans in supplement form and, for comparison, took a placebo at a different point of the study.
They did not change their diet. They were physically active. They lost more while on the supplements than while on placebo. They lost the most when on the higher of two coffee bean doses.
"We don't think it's the caffeine in it," says Joe Vinson, PhD, professor of chemistry at the University of Scranton.
He presented the findings Tuesday at the annual meeting of the American Chemical Society in San Diego. The results echo those of earlier studies, but Vinson used a larger dose of the green coffee beans.
The study included people 22 to 46 years old. It was funded by Applied Food Sciences, which makes the green coffee antioxidant supplement.
The results are interesting, but the study was small and short, so further study is needed, says Connie Diekman, RD, director of university nutrition at Washington University in St. Louis. She reviewed the findings for WebMD.
Green Coffee Beans for Weight Loss: Study Details
Vinson and his colleagues gave the men and women in the study a 700-milligram (mg) dose of the ground coffee beans and a 1,050 mg dose. They also gave them a placebo or inactive dose during the 22-week study.
The men and women cycled through each phase for six weeks. In between, they had ''wash-out'' periods where they didn't take any supplement. In this way, they served as their own comparison group.
"Their calories were monitored," Vinson says. They were not put on diets. Calorie intakes stayed about the same during the study. They averaged about 2,400 calories a day -- by no means a weight reduction plan.
They burned, on average, about 400 calories a day in physical activity, Vinson says. The study was done in India.
The 17-pound loss was the average. Some lost only about 7 pounds; others about 26 pounds.
Overall, body weight declined by an average of 10.5%. Body fat declined by 16%.
The study participants lost slightly more weight with the higher dose compared to the lower dose, but not a significant amount with the placebo, Vinson says. Vinson can't say for sure why the coffee bean extract seems to help weight loss. He suspects one explanation is the unroasted beans' chlorogenic acid.
Chlorogenic acid is a plant compound. It may have ''some effect on keeping down glucose absorption," which in turn helps reduce weight, Vinson says.
Once coffee beans are roasted, the chlorogenic acid breaks down.
None of the people in the study reported side effects, Vinson says. The capsules are extremely bitter, he says. They are best taken with a lot of water before a meal, he says.
A larger study of about 60 people is planned, Vinson says.
These findings were presented at a medical conference.
But, for many people, diet and exercise don’t work.
They should be considered preliminary, as they have not yet undergone the "peer review" process, in which outside experts scrutinize the data prior to publication in a medical journal.
Joe Vinson, PhD, professor of chemistry, University of Scranton, Scranton, Pa.
Connie Diekman, RD, director of university nutrition, Washington University in St. Louis; former president, Academy of Nutrition and Dietetics.
American Chemical Society's 243rd National Meeting and Exposition, March 25-29, 2012, San Diego, Calif.
Green coffee beans for weight loss? Um, never mind
Remember when green coffee bean extract was the next big thing in weight loss, a remedy with positive clinical findings touted as a breakthrough by Dr. Mehmet Oz and aggressively hawked online?
Last week, the 2012 study that started the hype and jump-started a coffee bean buying frenzy was retracted by Joe Vinson and his coauthor, Bryan Burnham of the University of Scranton. Writing in the journal Diabetes , Metabolic Syndrome and Obesity: Targets and Therapy, Vinson and Burham said they were retracting the study, published in the journal, because "the sponsors of the study cannot assure the validity of the data."
The retraction followed a $3.5-million settlement last month between Applied Food Science Inc. -- a manufacturer of a green coffee bean product and sponsor of Vinson and Burnham's study -- and the Federal Trade Commission .
In a complaint leading to the settlement, the FTC called the study, conducted by researchers in India at AFS Inc.'s behest, "so hopelessly flawed that no reliable conclusions could be drawn from it."
The study's lead investigator repeatedly altered the weights and other key measurements of the subjects, the FTC charged. He changed the length of the trial and misstated which subjects were taking the placebo, the agency said.
When the Indian investigators were unable to get the study published, the FTC said AFS hired Vinson and Burnham to rewrite the study for submission to journals.
"Despite receiving conflicting data, Vinson, Burnham and AFS never verified the authenticity of the information used in the study," the FTC said in a news release.
Vinson succeeded in getting a spot on the roster of the American Chemical Society's spring meeting to present the study, and it was quickly accepted and published by Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy.
The study was said to have 16 participants, who cycled between a low-dose of green coffee bean extract, a high dose of the supplement and a placebo. Subjects taking the supplement were reported to have lost an average of 17.5 pounds in 22 weeks and reduced their overall body weight by 10.5%.
And those reported changes came despite the fact that participants' average daily calorie consumption did not change, Vinson reported. The FTC complaint, however, contends that participants were told to restrict their calories and to exercise more.
Vinson told the Los Angeles Times that a larger trial was planned to further investigate the supplement's safety and effectiveness in 60 participants.
News of the supplement's alleged promise prompted Oz, on his show, to hail green coffee beans as a "miracle" aid to weight loss.
Don’t take this supplement (or any other supplement) if you’re pregnant or breastfeeding Talk to your doctor about your decision to take this supplement if you’re diabetic or living with Alzheimer’s disease.
Garcinia cambogia contains the natural key ingredient to weight loss, which is HCA.
In the weeks that followed, supplement manufacturers used video of Oz's seeming endorsement to boost sales, the FTC inquiry found.
“Applied Food Sciences knew or should have known that this botched study didn’t prove anything,” said Jessica Rich, director of the FTC’s Bureau of Consumer Protection . “In publicizing the results, it helped fuel the green coffee phenomenon.”
This summer, Oz -- appearing before a hearing of the Senate's subcommittee on consumer protection, product safety and insurance -- was chastised for appearing to endorse green coffee beans and other dietary supplements as safe and effective treatments.
"I don't get why you need to say this stuff when you know it's not true," subcommittee chairwoman Sen. Claire McCaskill (D-Mo.) said to Oz. "With power comes a great deal of responsibility."
In addition to agreeing to settle the case for $3.5 million, Applied Science Inc. agreed "to have scientific substantiation for any future weight-loss claims it makes, including at least two adequate and well-controlled human clinical tests."
Follow me on Twitter at @LATMelissaHealy and "like" Los Angeles Times Science & Health on Facebook.
How To Use Green Tea For Weight Loss
Green tea boosts your metabolism to help you lose weight. You won’t get skinny overnight, but you’ll shed a few pounds. Plus, it’s full of life-extending health benefits!
Want to lose weight? Research shows that green tea can help by boosting your metabolism to burn more fat. We’ll show you how you can use green tea for weight loss.
Green tea has been a popular weight loss solution ever since Dr. Nicholas Perricone told viewers of the Oprah Winfrey Show that you could lose 10 pounds in six weeks simply by substituting the coffee you drink with green tea. Is that true?
It’s mostly true. Medical research shows that green tea can actually help you lose weight! It just works a little more slowly than Dr. Perricone suggested.
How Much Weight Can You Really Expect To Lose?
If Dr. Perricone was exaggerating, what’s the real truth about green tea and weight loss?
For starters, green tea has zero calories, which makes it a smart beverage choice. It’s much better than soft drinks or coffee with cream and sugar.
But more importantly, drinking green tea gives your metabolism a boost that causes your body to burn more fat. You can think of it as melting fat and converting it to energy. That’s the real weight loss benefit you get. (Read more about this in the sections below.)
So, how many pounds can you lose by simply drinking green tea for weight loss?
The metabolism boost is only a temporary effect, and it’s not huge. While some studies have shown more dramatic results, a 2010 report by researchers at the University of Connecticut looked at fifteen previous studies and concluded that the average person’s green tea weight loss was about 3 pounds over a 12 week period.
Well, it works for a while but you do not really see long-term results, nor is it a solution in the first place.
Each pound is 3,500 calories, so that’s about 1 pound a month, or a little more than 100 calories per day.
That may not sound like much, but it adds up to about 12 pounds each year. Since the average person gains a few pounds per year after age 20, losing 12 pounds a year is actually pretty great!
How Much Green Tea Should You Drink?
The amount of beneficial compounds in green tea can vary, depending on the tea. But most studies suggest that drinking 3 -4 cups of green tea per day is the right amount — that’s the typical amount that people drink in Asia.
You shouldn’t go overboard and drink much more than 4 cups per day. Some research has suggested that too much green tea might increase liver toxicity, although a 2009 study by German researchers found no danger to your liver. But until more studies are done, stick to 4 cups a day or less.
Lose about one pound per month by drinking three to four cups of green tea each day.
You should also note that green tea contains caffeine — about half the amount of black tea and one quarter the amount of coffee.
So if you have trouble sleeping, you should avoid green tea in the afternoon and evening. And note that decaffeinated green tea does not have the same fat burning effects as caffeinated tea. So you need to keep the caffeine!
How Should You Prepare Your Green Tea?
To maximize the fat burning potential and get the most health benefits out of your green tea, you should brew your tea fresh and steep it for at least 3 -5 minutes.
And don’t add any sugar to your tea! Those empty calories will wipe out any weight loss benefits that you’ll get from your tea.
Note that freshly brewed tea has the most benefits. Decaffeinated tea, instant tea, and ready-to-drink bottled tea drinks have less of the healthy antioxidants (catechins) that help you lose weight. And they are usually loaded with sugar.
How Does Green Tea Help You Lose Weight?
So, how does green tea work?
It turns out that green tea contains high levels of naturally occurring compounds called antioxidant polyphenols. Scientists have focused on a particular polyphenol found in green tea: a catechin called epigallocatechin-3-gallate, or EGCG.
The EGCG combined with the caffeine in green tea produces what scientists call diet-induced thermogenesis. This effect boosts your body temperature and your metabolism, forcing your body to work harder and burn calories to cool you down. The green tea ingredients trigger your body to release stored fat into your blood stream where it is converted to energy by your liver and muscles.
Green tea essentially triggers your body to boost your metabolism, melt fat, and burn it. Awesome!
EGCG does much more for you than just burn fat. It will lower your cholesterol, boost your memory, prevent the flu, and much more. Find out more in our article Health Benefits of Green Tea: Facts & Fictions.
Boost the Fat Burn: Combine Green Tea With Exercise!
It’s important that you don’t view green tea as a magic bullet that will make you skinny overnight.
Garcinia Cambogia Extract is a popular dietary supplement made of all-natural ingredients.
As we said, on its own, green tea will only help you lose about one pound per month. You also need to make sure that you are eating sensibly and exercising regularly.
As a bonus, you’ll get even more fat burning results from green tea when you combine it with regular exercise. Studies have shown that drinking three to four cups of green tea per day will boost your exercise endurance by causing your body to burn fat instead of carbohydrates during your workouts.
Burning the carbs stored in your muscles causes the buildup of lactic acid which leads to fatigue and sore muscles. But green tea causes your muscles to burn more fat instead of carbs, which delays your fatigue and increases your endurance. And, of course, you are burning and eliminating more fat with every workout!
Is Green Tea Better than Black Tea or Coffee?
If you don’t like green tea, can you get the same benefit from other teas or coffee?
Drinking green tea can help you lose 10 or more pounds each year. That’s much better than gaining a few pounds each year!
All non-herbal tea comes from the same plant. But unlike oolong or black tea, green tea leaves are not fermented before they are dried. As a result, green tea has much higher concentrations of the catechins that provide weight loss and other benefits. So other teas aren’t nearly as beneficial as green tea.
And coffee also doesn’t work. While some of the fat burning effects are caused by the caffeine in green tea, researchers found that its the combination of the catechins and the caffeine together that cause the weight loss effects. Swiss researchers looking at this issue concluded that “green tea has thermogenic properties… beyond that explained by its caffeine content.” Green tea extracts without caffeine did not work, and neither did caffeine alone.
Do Green Tea Extract Supplements Work, Too?
If you really don’t like green tea or if you don’t have time to brew it, you can actually get the same weight loss benefits from green tea extract supplements. A 2010 study by Oklahoma State University researchers found that both freshly brewed green tea and extract supplements provided the same body weight and BMI (body mass index) reductions.
However, the researchers also found that some other green tea health benefits came only from the freshly brewed tea and not from the supplements.
Research studies show that drinking green tea causes your body to burn fat.
Research Studies Show It Really Works
The Chinese have been drinking green tea for thousands of years. In recent years, it’s become popular all around the world and both eastern and western scientists have done a great deal of research on the health benefits of green tea, including numerous studies confirming that green tea really can help you lose weight.
For example, the 2010 Oklahoma State study mentioned above looked at obese test subjects and concluded that drinking four cups of green tea or taking two extract supplements per day for 8 weeks resulted in “significantly decreased body weight and BMI,” averaging about 5.5 pounds per person.
Looking at obese patients trying to lose weight with exercise, researchers in a 2009 Indiana study found that test subjects who took green tea catechins combined with caffeine (about equivalent to 4 cups of green tea per day) lost more weight than those who took only caffeine.
It is usually a target of several antidepressant medicines.
And, the green tea subjects had larger reductions in their stomach fat.
In one of the most cited studies, published in a 2005 issue of The American Journal of Clinical Nutrition, Japanese researchers studied 38 healthy men with varying weights and BMI’s, giving half of them regular oolong tea and half of them oolong tea with added green tea catechins. After 12 weeks, all the men experienced some weight loss, but the subjects who got the green tea catechins had about double the weight loss and double the decrease in BMI and waist circumference. The green tea extracts made a big difference.
Finally, researchers working on the previously mentioned 2010 University of Connecticut study looked at fifteen prior studies that included 1,243 test subjects, and they saw “statistically significant reductions” in body weight, BMI, and waist circumference for subjects that either drank green tea or took supplements with the equivalent amount of green tea catechins and caffeine. Those researchers saw a reduction of about one pound per month.
It should be noted that the UConn researchers thought that the weight loss results were not “clinically relevant” when compared to “pharmacologic weight-loss products on the market.” But we disagree.
As we’ve said, you won’t get dramatic results from green tea. But it can be a very helpful part of any weight-loss plan. And considering the many other health benefits of green tea, losing one pound a month seems like a very nice bonus.
Do you drink green tea? Have you used it to lose weight? Let us know by leaving a comment below!
Green Tea: Drink Up!
So, add green tea to your daily routine. If weight loss is your primary goal, you can go with green tea extract supplements. But since freshly brewed green tea also provides a long list of additional health benefits, we’d suggest skipping the pills and brewing yours fresh. Switching to zero-calorie green tea from other calorie-rich drinks is a double bonus — you eliminate calories in your diet while boosting your metabolism. And you’ll get all the other green tea health benefits, too!
(To see all the reasons that your should be drinking green tea, read our article Health Benefits of Green Tea: Facts & Fictions.)
Do you enjoy drinking green tea? What’s your favorite brand? Has it helped you lose or maintain your weight? Leave a comment below and let us know…