whey better then soy and casein for thermogenesis

by admin_admin_1 on April 20, 2011

We have known many people to use thermogenic supplements to increase temperature for extra caloric burn, but many may not be aware that whey protein has immense thermogenic capabilities which can lead to that extra bit of fat loss.  New research by Swiss scientists tested the impact on energy expenditure and fat oxidation from single meals that contained whey, casein and soy protein. They also threw in a carbohydrate meal to try and investigate any indirect correlation. Results?


Thermogenic supplements are popular in weight loss formulas because they boost metabolism. However, consuming simple food raises metabolism and some foods are better at inducing thermogenesis than others. In general protein is significantly more thermogenic than carbohydrate or fat. But new research is focusing on differences between protein sources.  Swiss researchers tested how ingesting single meals containing whey, casein and soy impacted energy expenditure and fat oxidation. The test meals all contained 459 kcal, and half the calories were from protein isolates derived from whey, casein or soy.  There was a control meal containing only carbohydrate. Measurements were taken for 5.5 hr after the meal. Compared to the carbohydrate meal, all 3 protein meals resulted in a significantly greater increase in energy expenditure. When comparing protein meals, whey resulted in a greater increase in thermogenesis than soy and casein. Compared to the carbohydrate meal, whey protein resulted in an additional 34 kcal expended over the 5.5 hr period. Fat oxidation was also higher during whey intake than the other meals. This study confirms that protein increases energy expenditure more than an equal amount of carbohydrate, and that whey protein is more thermogenic than other protein sources.

. Acheson KJ, Blondel-Lubrano A, Oguey-Araymon S, Beaumont M, Emady-Azar S, Ammon-Zufferey C, Monnard I, Pinaud S, Nielsen-Moennoz C, Bovetto L. Protein choices targeting thermogenesis and metabolism. Am J Clin Nutr. 2011 Mar;93(3):525-34.

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