We will start our research from question “What is Raspberry Ketone?” We will find out if it is a natural product and where it comes from and what it do to your body. If you are interested, please read on…
What is it? Raspberry ketone is the natural phenolic compound found in red raspberries (Rubus idaeus). In simple terms, this chemical compound gives berries their signature scent. Until recently, raspberry ketones were used primarily by the perfume and manufactured food industries, but now the compound is being sold in supplement form.
Raspberry ketones have been touted as the next weight-loss miracle drug, with manufacturers claiming that the ketones help your body break down fat more efficiently, helping you to lose more weight. Is it true?
Before you run to the pharmacy to pick up a bottle, at least finish reading this blog. What I’m about to share with you might surprise (or downright shock) you!
And now some info from our will known doctor:
What is raspberry ketone?
Raspberry ketone is an aromatic component present in raspberries and other fruits. It can also be produced synthetically in a lab.
Why has raspberry ketone been targeted for weight loss?
Scientists had previously shown that pungent compounds with similar chemical structures, such as capsaicin and synephrine, had lipolytic activity – causing fat breakdown – in rats fed a high-fat diet and in in vitro fat cells.
What did scientists do in the lab?
In one experiment, to test the effect on obesity, mice were fed a high-fat diet plus raspberry ketone for about 10 weeks. Other experiments were carried out in vitro (in test tubes, petri dishes, etc.).
What did scientists learn about fat cells?
Researchers observed that, compared to controls, raspberry ketone decreased the amount of fat in the liver and visceral adipose (abdominal fat) tissues of mice. It also significantly increased norepinephrine-induced lipolysis (the decomposition of fat) in some rat fat cells.
Researchers also tested in vitro fat cells with raspberry ketone and found that they showed greater evidence of breakdown when compared to controls.
What did scientists find out about the relationship between raspberry ketone and adiponectin?
Adiponectin is a protein used by the body to regulate metabolism. Higher levels are associated with fewer fat stores. Scientists studied the effects of raspberry ketones on in vitro fat cells and observed a higher secretion of adiponectin when compared to controls.
What did scientists conclude?
They concluded that raspberry ketone prevents and improves obesity and fatty liver in certain animal models. While the exact mechanism has not been thoroughly understood, these effects appear to stem from the action of raspberry ketone in altering the lipid metabolism, or more specifically, in increasing norepinephrine-induced lipolysis in white adipocytes (fat cells).
Scientists speculate that raspberry ketone stimulates the energy metabolism via a mechanism similar to that of capsaicin. Capsaicin, a compound found in chili peppers, has been looked at in humans for weight loss.
In another study, the effect of raspberry ketone on energy metabolism was examined by measuring metabolic markers in brown fat tissue, a special kind of fat that generates heat in a process called thermogenesis. These results reportedly indicate that raspberry ketone activates the brown fat thermogenesis and enhances energy metabolism. In any case, more detailed studies are called for to determine a mechanism for raspberry ketone.
What do the animal data on raspberry ketone mean for humans?
Mice and rats are the most widely used animal models in biomedical research. It is important to note that besides being non-human mammals, these animals are housed under standard laboratory conditions, and the use of overweight and unstimulated animals as standard controls may bias the measured experimental outcomes.
Animal models and test tube experiments are important parts of scientific discovery and innovation, especially at early stages. Positive early results in the lab can be promising, but these do not always mean the same outcomes will occur in humans.
But other sources do not agree with it, they say that this product wasn’t been tasted and do nothing for weight loss:
If you watch TV, read magazines, listen to the radio, or even glance at the Internet, you’re going to be bombarded by ads and other promotional listings for raspberry ketone, the new “miracle fat-burner in a bottle” ingredient that is promoted to melt away flab while you change absolutely nothing else in our life.
There’s just one little problem: Raspberry ketone shows absolutely no efficacy for weight loss, and there isn’t even one tiny little study demonstrating that anybody ever lost weight taking raspberry ketone.
A natural antioxidant compound found in raspberries, blackberries, cranberries, peaches, grapes, apples and other plants, raspberry ketone has become the rage for dieters despite vapor-thin science conducted in test tubes using rodents. Also known as rheosmin, raspberry ketone has been used as a flavoring agent for almost 90 years. In the cosmetic sector it is an expensive fragrance
Most of the diet buzz surrounding raspberry ketone centers around one mouse study conducted in Japan, and a rat study conducted in Korea. In the Japanese mouse study, mice given a high fat diet and raspberry ketone did not become obese. The study results were reported in February 2005 in the journal Life Sciences. The Korean rat study was reported in the journal Planta Medica in April 2010. In male rats, administration of high doses of raspberry ketone prevented an increase in body weight when the rats were fed a high fat diet.
To start, mice and rats are not human beings. While rodents are often used as precursors to human studies, we only share approximately 85 percent of the same DNA as mice – but we also do not share 15 percent. The mice and rats in the two studies lived in cages, not in the real world. And the rodents were fed controlled diets. They had no access to fast foods, pizza, ice cream or fat-producing snacks. They could not get up in the middle of the night to raid the refrigerator. In other words, there is no valid connection of any sort between these two rodent studies and your likelihood of losing weight.
According to proponents, raspberry ketone supposedly helps to enhance activity of the human hormone adiponectin, which plays a role in regulating blood glucose and body weight. Adiponectin works in the body to modify blood glucose and insulin. So it sounds as though raspberry ketone would be a weight loss aid, right? However, to date there is not even one human study demonstrating any weight loss at all as a result of consuming raspberry ketone.
Marketers of raspberry ketone rely on the rapid repetition of pseudo-science to create the impression that using this agent for weight loss is valid. Since many people do not understand that much about human biochemistry, the pseudo-science that is spouted for this product can sound impressive – but proceed with caution. People may buy a couple of bottles of raspberry ketone, take the product, fail to lose weight, and move on to the next illegitimate diet craze.
As obesity rates soar in the U.S. and more people become desperate for help to lose weight, we will continue to see an endless number of diet crazes, most based on agents that do not actually work or perform so marginally that no significant weight reduction can be achieved. The science of weight loss is very well established. Reduce calories, eat “cleaner” types of unprocessed foods, exercise regularly to burn calories, and you can ultimately lose weight steadily. Fail to engage in these fundamentals, and nothing happens. The raspberry ketone craze preys upon people’s trust, grossly under-delivering in return.
Still we have some reviews which clam that Raspberry Ketone works and they have good results:
Super product, it really works., April 6, 2013This review is from: Raspberry Ketones Liquid – All-Natural Diet Drops For Weight Loss Proven To Work For All Body Types. 98% Absorption, 3 Times Faster Than Capsules. Includes Full 30-Day Supply (Health and Beauty)
Even though Dr. Oz raved about raspberry ketones calling them a “a fat loss miracle” I was skeptical. Not that I watch his show much. Nor do I buy everything he recommends on a weekly basis. I decided to give this a try. My husband helped me search online and we found all kinds of special deals from websites with bikini models and shady companies offering a free bottle. That’s why I decided to go straight to Amazon because I always have a good experience here from trusted companies. Even on Amazon though, I had to sort through all the questionable reviews from people claiming they lost 20 lbs in one week. I finally found this company (Feeling 10) that seemed legitimate. That’s why I decided to take the plunge, order a bottle and received it over two weeks ago. Dr. Oz recommended taking it on an empty stomach 30 minutes before a meal, twice a day. That is exactly what I did. I am on the road a lot with my job and my eating schedule is often while driving, so this proved to be more challenging than I thought. After the first day or two I wasn’t that impressed because I didn’t feel any different. But after that second day I began to notice that I was not snacking as much as before. Plus, I wasn’t getting the usual energy crash between 2:00 and 3:00 like I usually do. It’s really been working for me. I have lost 5 lbs in just two weeks with no major changes to my diet either. I am impressed with the results and have already recommended this product to my sister and a few friends.
Lets watch some videos about Raspberry Ketone