One small study proposes that raspberry ketones, administered topically, can increase hair growth and improve skin elasticity. While there are anecdotal reports of jitteriness, rapid heartbeat and increased blood pressure, there are no studies to support this.
Without human studies on raspberry ketones, there is no good data on side effects or a science-backed recommended dosage.
While they seem to work in test animals fed extreme doses, this has no relevance to the doses commonly recommended in humans. Lasting, beneficial changes in your lifestyle are much more likely to have an impact on your weight than raspberry ketones.
This is a detailed, evidence-based review of the 12 most popular weight loss pills and supplements on the market today.
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A weight loss supplement called garcinia cambogia has shown some promise in studies. This article reviews its effects on your weight and health. Health Conditions Discover Plan Connect. A Detailed Review. Among the most popular is a supplement called raspberry ketones. This article examines the research behind raspberry ketones. Share on Pinterest. What Are Raspberry Ketones? That study also found that raspberry ketone altered the expression of genes in the liver in a manner that appeared favorable to the mice's health.
However, a study conducted by researchers in Denmark suggested that raspberry ketone itself may not reduce body fat levels. But the raspberry ketone-fed mice also didn't eat as much food as mice that weren't fed this molecule, and the researchers concluded that raspberry ketone did not reduce fat levels beyond what would be expected from a lower calorie diet.
Preliminary research has also found that raspberry ketone — when applied directly on the skin — could help combat signs of aging. Research in mice, and on cells growing in lab dishes, often inspires more research. But for results that can be trusted, doctors look for many human trials of a chemical, with many participants. Overall, the U. Department of Defense Human Performance Resource Center deems the weight loss evidence on raspberry ketone as "insufficient.
The U. However GRAS status is given under the assumption that a person will consume less than two milligrams of raspberry ketone a day. Most weight loss supplements pack far more raspberry ketone into their products. Raspberry ketone is not well studied at concentrations used in supplements — which can range from 50 to milligram per serving. And there are some known side effects from their use.
There are no known interactions with foods. The appropriate dose of raspberry ketone depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for raspberry ketone. Keep in mind that natural products are not always necessarily safe and dosages can be important.
Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using. Other names. Electronic Code of Federal Regulations. Title 21, Chapter 1, Subchapter B, Part food additives permitted for direct addition to food for human consumption.
J Diet Suppl Oct View abstract. Phenolic-enriched raspberry fruit extract Rubus idaeus resulted in lower weight gain, increased ambulatory activity, and elevated hepatic lipoprotein lipase and heme oxygenase-1 expression in male mice fed a high-fat diet. Nutr Res ; Ushiki, M. Anti-obese activities of raspberry ketone. Aroma Research ; Sporstol, S. The metabolism of 4- 4-hydroxyphenyl butanone raspberry ketone in rats, guinea-pigs and rabbits.
Xenobiotica ; Lin, C. J Mol. Koeduka, T. Res Commun. Jeong, J. Food Chem. Feron, G. Microbial production of 4-hydroxybenzylidene acetone, the direct precursor of raspberry ketone. Garcia, C. Characterization of the bound volatile extract from baby kiwi Actinidia arguta.
J Agric. Lopez, H. Eight weeks of supplementation with a multi-ingredient weight loss product enhances body composition, reduces hip and waist girth, and increases energy levels in overweight men and women. J Int Soc Sports Nutr ; Raspberry ketone protects rats fed high-fat diets against nonalcoholic steatohepatitis.
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