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Olive Oil Aroma Aids Weight Control
Scents in extra virgin olive oil made subjects feel full and helped stabilize their weight
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By Craig Weatherby
Conventional weight-control wisdom of the 1980’s called for cutting on back fat.
That makes some sense, since fat has twice as many calories as carbs or protein.
Then, that fad gave way to a low-carb craze triggered by the claims made for low-carb, Atkins-style diets.
Clinical trials find low-fat vs. low-carb diets about equally effective at weight loss and control – though low-carb has the edge.
Once again, low-fat food products are gaining popularity, with more people choosing “light” varieties.
But while low-fat foods contain fewer calories, they are less satiating, so people tend to overcompensate by eating more.
Fats satisfy about equally, omega-3s offer metabolic aid
Dietary fat makes us feel full and – like carbs – triggers satiety signals to the brain.
However, there’s no good evidence that different fats – saturated, monounsaturated, or polyunsaturated – affect satiety or calorie intake very differently (Strik CM et al. 2010).
That said, there is evidence that omega-3 fats boost the burning of body fat and curb appetite to modest extents (Harden CJ et al. 2012; Hibbeln JR et al. 2012).
Now, a clinical trial shows that among common fats, olive oil curbs appetite (satiates) and cuts calorie intake best.
Amazingly, its aroma appears to account for much of its ability to help control weight and body fat.
Olive oil found more effective than other fats
European scientists conducted a clinical trial to compare the effects of four different food fats or oils – lard, butterfat, canola oil, and extra virgin olive oil – on subjects’ appetite.
The participants were divided into five groups, with the volunteers in each group assigned to eat 500 grams (18 ounces) of yogurt every day for three months, in addition to their normal diet.
But each group got a different kind of yogurt:
  • Fat-free yogurt
  • Fat-free yogurt with lard
  • Fat-free yogurt with butter
  • Fat-free yogurt with olive oil
  • Fat-free yogurt with canola oil
After three months, “Olive oil had the biggest satiety effect,” said Prof. Peter Schieberle of the Technical University of Munich.
“The olive oil group showed a higher concentration of the satiety [appetite-satisfying] hormone serotonin in their blood.” (TUM 2013)
Compared with the groups eating the three other fat-enriched-yogurts, the olive-oil-yogurt group found theirs more filling.
More importantly, no member of the olive-oil-yogurt group gained body fat or weight.
Similarly, the volunteers in the butter and control (no fat in the yogurt) groups reduced their caloric intake and did not gain weight.
In contrast, the canola and lard groups gained weight … and didn’t reduce their calorie intake.
This was surprising, given the similar fat profiles of olive and canola oils, which are both unusually high in monounsaturated fat.
Olive oil’s aroma is the key
To find out why olive oil worked so much better than canola oil, the team decided to test its aromatic compounds alone.
For this second part of the study, one group was given fat-free yogurt with olive oil aroma extracts and a control group was given plain fat-free yogurt.
The results were striking: The olive oil group’s calorie intake remained the same, but the control group (no olive extract in the yogurt) consumed an extra 176 calories per day.
As Dr. Schieberle explained, “The aroma group adapted their eating habits – but the control group participants were obviously not able to do likewise.”
“We also found that in comparison to the other group, the control group had less of the satiety hormone serotonin in their blood.” (TUM 2013)
Olive oil has least impact on blood sugar level
The duration of satiety after eating depends on many factors, but your blood sugar level is key … the faster it falls, the sooner hunger returns.
Accordingly, the researchers examined which of the aroma substances in olive oil are most effective at inhibiting glucose absorption.
They identified two “grassy” aroma molecules (hexanal and e2-hexenal) that reduced absorption of glucose, thereby slowing the normal post-meal drop in blood sugar.
“Our findings show that aroma is capable of regulating satiety,” concludes Schieberle.
Their discovery might pave the way for reduced-fat food products that kill two weight-control birds – fewer calories and reduced appetite – with one olive-scented stone.
  • Anderson GH, Catherine NL, Woodend DM, Wolever TM. Inverse association between the effect of carbohydrates on blood glucose and subsequent short-term food intake in young men. Am J Clin Nutr. 2002 Nov;76(5):1023-30.
  • Anderson GH, Woodend D. Consumption of sugars and the regulation of short-term satiety and food intake. Am J Clin Nutr. 2003 Oct;78(4):843S-849S. Review.
  • Anderson GH, Woodend D. Effect of glycemic carbohydrates on short-term satiety and food intake. Nutr Rev. 2003 May;61(5 Pt 2):S17-26. Review.
  • Harden CJ, Jones AN, Maya-Jimenez T, Barker ME, Hepburn NJ, Garaiova I, Plummer SF, Corfe BM. Effect of different long-chain fatty acids on cholecystokinin release in vitro and energy intake in free-living healthy males. Br J Nutr. 2012 Aug;108(4):755-8. doi: 10.1017/S0007114511006003. Epub 2012 Feb 7.
  • Hibbeln JR. Hong Lin Y, Alvheim AR. A century of change in linoleic acid: Endocannabinoids, obesity and addiction. National Institute on Alcohol Abuse and Alcoholism, USA.
  • Jacobson A, Green E, Murphy C. Age-related functional changes in gustatory and reward processing regions: An fMRI study. Neuroimage. 2010 Nov 1;53(2):602-10. doi: 10.1016/j.neuroimage.2010.05.012. Epub 2010 May 20.
  • Massolt ET, van Haard PM, Rehfeld JF, Posthuma EF, van der Veer E, Schweitzer DH. Appetite suppression through smelling of dark chocolate correlates with changes in ghrelin in young women. Regul Pept. 2010 Apr 9;161(1-3):81-6. doi: 10.1016/j.regpep.2010.01.005. Epub 2010 Jan 25
  • Mourao DM, Bressan J, Campbell WW, Mattes RD. Effects of food form on appetite and energy intake in lean and obese young adults. Int J Obes (Lond). 2007 Nov;31(11):1688-95. Epub 2007 Jun 19.
  • Poppitt SD, Strik CM, MacGibbon AK, McArdle BH, Budgett SC, McGill AT. Fatty acid chain length, postprandial satiety and food intake in lean men. Physiol Behav. 2010 Aug 4;101(1):161-7. doi: 10.1016/j.physbeh.2010.04.036. Epub 2010 May 6.
  • Rolls ET. Sensory processing in the brain related to the control of food intake. Proc Nutr Soc. 2007 Feb;66(1):96-112.
  • Rolls ET. Taste, olfactory and food texture reward processing in the brain and obesity. Int J Obes (Lond). 2011 Apr;35(4):550-61. doi: 10.1038/ijo.2010.155. Epub 2010 Aug 3. Review.
  • Schieberle P et al. Identifying substances that regulate satiety in oils and fats and improving low-fat foodstuffs by adding lipid compounds with a high satiety effect; Key findings of the DFG/AiF cluster project “Perception of fat content and regulating satiety: an approach to developing low-fat foodstuffs”, 2009-2012.
  • Strik CM, Lithander FE, McGill AT, MacGibbon AK, McArdle BH, Poppitt SD. No evidence of differential effects of SFA, MUFA or PUFA on post-ingestive satiety and energy intake: a randomised trial of fatty acid saturation. Nutr J. 2010 May 24;9:24. doi: 10.1186/1475-2891-9-24.
  • Technical University of Munich (TUM). Olive oil makes you feel full. March 14, 2013. Accessed at
  • Trellakis S, Tagay S, Fischer C, Rydleuskaya A, Scherag A, Bruderek K, Schlegl S, Greve J, Canbay AE, Lang S, Brandau S. Ghrelin, leptin and adiponectin as possible predictors of the hedonic value of odors. Regul Pept. 2011 Feb 25;167(1):112-7. doi: 10.1016/j.regpep.2010.12.005. Epub 2010 Dec 24.
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