April 03, 2006
Pine Nut Oil Reduces Appetite

Pine nuts as a useful diet food?

SAN FRANCISCO In the face of the growing obesity health challenge, "appetite suppressants are increasingly interesting because they work on the very simple premise of 'What you don't eat now, you won't need to lose later,'" Alexandra Einerhand, director, nutrition and toxicology-Europe at Lipid Nutrition notes.

Einerhand says that in a study, polyunsaturated fatty acids (PUFAs) derived from "Korean pine nuts, which have been part of our diet since before ancient Greek and Roman times, stimulated two well-known appetite suppressing peptide hormones at the same time that overweight women reported significantly less desire to eat only 30 minutes after ingestion," compared with an olive oil placebo.

In a paper being presented in an American Physiological Society session at Experimental Biology 2006, Einerhand reports that "in this randomized, double-blind cross-over trial, the greatest effect was observed after just 30 minutes, with the 18 women reporting a 29% reduction in "desire to eat" and a 36% drop in "prospective food intake" scores. Their subjective feelings of appetite were evaluated by visual analog scales, a validated scoring system.

The experiment found a parallel and significant increase in cholecystokinin (CCK) of 60% and glucagon-like peptide 1 (GLP1) of 25% that remained as long as four hours after ingestion. CCK and GLP1 are appetite suppressors, which "send signals of satiation to the brain diminishing the desire to eat and food intake usually significantly," she adds.

In my own sample of one eating a few Brazil nuts seems like it causes a reduction in my appetite lasting for hours. I've long suspected that some nuts have this effect. But until now I haven't come across any research that provided a mechanism to support my intuition about nuts and appetite. Anyone else find that some type of nuts reduces your appetite?

Share |      Randall Parker, 2006 April 03 09:34 PM  Brain Appetite

Robert Schwartz said at April 4, 2006 12:28 AM:

Freakonomics: Does the Truth Lie Within?; By STEPHEN J. DUBNER and STEVEN D. LEVITT; Published: September 11, 2005

"A few tablespoons of unflavored oil (he used canola or extra light olive oil), swallowed a few times a day between mealtimes, gave his body some calories but didn't trip the signal to stock up on more."

The Shangri-La Diet: The Book; 2006 (April 25); Roberts, S. New York: Putnam.

Brian said at April 4, 2006 12:12 PM:

They reduce your appetite because they taste like crap. The taste left in your mouth kills your appetite.

Matt said at April 5, 2006 4:38 AM:

Here is my unproven theory.

Nuts contain enzyme suppressants that actually suppress or reduce the effectiveness of digestion enzymes. The suppression or reduced effectiveness leads to a decrease in appetite.

nutty said at April 5, 2006 4:53 AM:

I eat chocolate almonds every day that I ride my bike about 90 minutes. (5 times a week) I dont feel like eating for quite a while, but then again there are 600 calories in the box.

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