I have been hearing a lot about raspberry ketones lately and wanted to do some research and educate people. It must be good, DR Oz is recommending it right? Here is a link to his website. http://www.doctoroz.com/videos/miracle-fat-burner-bottle
What he doesn’t say though is what I found below from Wikipedia.
Raspberry ketone is a natural phenolic compound that is the primary aroma compound of red raspberries. It is used in perfumery, in cosmetics, and as a food additive to impart a fruity odor. It is one of the most expensive natural flavor components used in the food industry. The natural compound can cost as much as $20,000 per kg. In 1965, the Food and Drug Administration placed raspberry ketone on generally recognized as safe (GRAS) status.
Since the natural abundance of raspberry ketone is very low, it is prepared industrially by a variety of methods from chemical intermediates. One of the ways this can be done is through a crossed aldol-catalytic hydrogenation. In acetone and sodium hydroxide, 4-hydroxybenzaldehyde can form the α,β-unsaturated ketone. This then goes through catalytic hydrogenation to produce raspberry ketone. This method produces a 99% yield.
When given to mice in very high doses (up to 2% of body weight), raspberry ketone has been shown to prevent high-fat-diet-induced elevations in body weight. However, no effects on body weight were observed with doses up to 200 times greater than the estimated intake in humans. The high dose effect is reported to stem from the alteration of lipid metabolism, increasing norepinephrine-induced lipolysis. Although products containing this compound are marketed for weight loss, there is no clinical evidence for this effect in humans.
So in a nutshell, it’s not natural unless you pay out the wazoo, as the natural yield of ketones from raspberries is really low. So it is processed to produce more. hmm not natural….Also in MICE,not Humans it resulted in only a 2% reduction in body weight so if you weighed 200 pounds you would only lose 4 pounds. Not bad for $49.99 a bottle. The average woman who feels they need to lose weight is around the 165 pound range so 3.3 pounds. This is another example of people jumping on another fad diet because it sounds great and guess what it is too good to be true. It is supposed to work by affecting the metabolism by increasing the levels of two hormones, norepinerphrine and adiponectin. Spikes in norepinephrine cause the body’s temperature to rise, causing the body to burn more fat. you know what else does? jalapeno, cinnamon and anything else with capsicum. Or a 200 pound person can burn 4 pounds (14,000 calories) by walking at 5 mph for 30 minutes a day for 2 months for FREE or 34 hour-long walks with the bonus of increasing circulation,muscle tone and lung function.
No More Fad DIETS!!!!!!
- Dr. Oz cautions about raspberry ketone craze (examiner.com)
- Raspberry Ketones: What Is The Evidence Beyond Dr. Oz? (inspired-weightloss.com)