|Image 1: Coffee! Would you have recognized it?|
Green seems to be a good color for weight loss ;-)
In a recently published paper, a group of scientists from the University of Scranton, in the US, and the Health Sciences Clinic in Bangalore, India, report on the results of 22-week cross-over trial, in which the researchers tested the efficacy and safety of high (3x 350mg) and low (2x 350mg) doses of a commercial green coffee extract product (GCA by Applied Food Sciences; a 45.9% chlorogenic acid in an extract from unroasted = green coffee beans) in 16 overweight subjects (eight males and eight females; aged 22–46, mean age 33.19y; BMI 28.22km/m²). In each of the three arms of the studies, the subjects received the high and low dose supplement in a different order, so that the individual supplementation protocols looked like this:
- group 1: 6 weeks 3x 350mg / WA / 6 weeks 2x350mg / WA / 6 weeks placebo
- group 2: 6 weeks 2x350mg / WA / 6 weeks placebo / WA / 6 weeks 3x 350mg
- group 3: 6 weeks placebo / WA / 6 weeks 3x350mg / 6 weeks 2x 250mg
* WA: 2-week wash-out period without supplementation
The results you see in figure 1, especially in the beginning of the study, are impressive, given the fact that the reduction in calorie intake (which is unfortunately not group-speficic) amounted to no more than -2% over the whole study period.
|Figure 1: Mean weight over the whole 22-week study period and change in body fat percentage during the individual 6-week supplementation phases (data calculated based on Vinson. 2012).|
Maybe helpful for the obese, but questionable for anyone who is already lean
|Image 2: Coffee beans are not the only food (or raw material for a beverage) that loses some of its active and oftentimes healthy ingredients, when it is heated, or, as with coffee beans, roasted.|
If you are yet still relatively chubby (the Peter Griffin type from the "Intermittent Thoughts") just interested in losing weight (an average of 16lbs or -10.5% in the study at hand) - and for the pre-obese individuals in the study at hand, this could actually be the case - GCB may really be an acronym to memorize, though.
Note: I stuck to the acronym GCB, also because it differs from the brand name of the patented "GCA" used in the study. After all, there is no reason to pay for the "A", when all you have to look for is a green coffee bean extract with a cholorogenic acid content of ~46% and a total chydroxycinnamic acid of ~57% (note: chlorogenic acid is in fact one of those chydroxycinnamic acids). And if you are not into popping pills, why don't you just make your own green coffee bean instant coffee - should work just as it is described in this guide on eHow for the regular, roasted variety... ah, and if you do, let me know how it tastes ;-)