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Apple Peels for Weight Loss

By Juliet M. Getty, Ph.D.

When asked about an appropriate treat for overweight horses, I often recommend apple peels. Whole apples are too high in sugar - nearly 15 grams in a small apple - but the peels are tasty and a good source of fiber. 

But they just got even better - apple peels actually promote weight loss! It has to do with something called "ursolic acid." This naturally-occurring substance has been shown to stimulate muscle growth, increase carbohydrate metabolism, and reduce body fat by triggering production of brown adipose tissue (calorie-burning brown fat, or BAT) in mice. 

What exactly is BAT? Mammals possess two types of adipose (fat) tissue, brown and white. White adipose tissue stores fat, while brown adipose tissue (BAT) burns fat to produce heat when the body is exposed to cold. BAT also plays a role in energy metabolism. Studies on humans have shown that greater quantities of BAT are associated with lower body weight, so BAT has been of major interest to researchers based on its potential as a treatment to combat obesity. Studies have shown similar results in mice.

Admittedly, humans and mice differ from horses -- and each other -- in their metabolisms and body percentages of BAT, and no such studies have been done to date on horses; however it is worthwhile to note that apple peels may offer even more health benefits to the overweight horse than we previously thought. 

 

 


For Permission to Reprint

For permission to reprint this article, in part or in its entirety, or arrange for a private consultation, please contact Dr. Getty directly at gettyequinenutrition@gmail.com.