Raspberry ketones are chemicals found in raspberries. It is these chemicals that give the berry its flavor and aroma. The chemicals are widely used in food processing for flavoring and as a fragrance agent, and are also used in a number of cosmetics.
Raspberry ketones have long been known to have certain medicinal benefits, primarily for the skin, but their potential for promoting weight loss has been a fairly recent discovery. Weight loss supplements containing the chemical have been marketed for some time, but they first became widely known when mention was made of them on the popular Dr. Oz TV show.
As is often the case with supplements, whether they are being sold in conjunction with weight loss or otherwise they were at that time, and have been since, promoted as a miracle weight-loss supplement. There is however no evidence, other than anecdotal evidence, to back up this claim. The only clinical testing that has been conducted to date, has been done on rats. These tests gave some indication that raspberry ketones played a role in increasing the animal’s metabolism.
If your metabolism increases, your body will use up energy more quickly, and when some of that energy is stored as fat, you will tend to lose weight. Whether a dramatic increase in your metabolism is a healthy thing of not has yet to be verified. It is also uncertain as to what the dosage needs to be to have a significant effect on the human metabolism.
Supplements such as raspberry ketones are often promoted because they are capable of producing effects in the body that are seen to be helpful, and hopefully healthy as well. It is still too early to tell if these particular supplements will help a person lose weight, or if so, to what extent.
Green coffee bean is currently one of the most popular weight loss supplements. It is the bean extract to be precise, and there is a good reason behinds its popularity. Miracle supplements for weight loss come and go. Most of them go, without having accomplished much beyond making someone a good deal of money. The reasoning behind their appeal often makes sense, but it all too rarely translates into something tangible.
What is it about the green coffee bean that may make it different, and more effective than the rest, and why does the bean have to be green? There are two parts to the answer. One is caffeine, which to some extent appears to assist in weight loss, or at least provides a supporting role, and another is a compound called chlorogenic acid, which exists naturally in coffee beans. It is the chlorogenic acid that is the more active of the two in promoting weight loss.
The answer to the second part of the question is that when a green coffee bean is roasted, most of the chlorogenic acid in it is destroyed. You may get a small amount of it in your morning cup of coffee, but not enough to have any meaningful effect on your weight.
There is nothingmagical about this compound. It is a completely natural substance. What it does in your body, and in your digestive tract, is it prevents carbohydrates from being absorbed. Not all of the carbohydrates; just a fraction of them. A green coffee bean supplement acts somewhat like a low carb diet, which is a diet some go on when trying to lose weight. Carbohydrates are transformed into glucose, and the energy in an excessive amount of glucose is stored as fat. Weight is not necessary lost so much as it is not gained.