Olive Oil Regulates Satiety
A new study reveals that olive oil could regulate the sensation of feeling full after eating. Further investigation showed that the aromatic substance present in the oil reduces the absorption of glucose from the blood in liver cells, which regulates satiety.
The work groups under Prof. Peter Schieberle and Prof. Veronika Somoza studied four different edible fats and oils such as the lard, butterfat, rapeseed oil and olive oil. The participants involved had a daily intake of 500 grams of low-fat yogurt enriched with one of the four fats or oils (as a supplement to their normal diet) over a period of three months.
The findings showed that the olive oil group had a higher concentration of the satiety hormone serotonin in their blood hence had the biggest satiety effect. Likewise, the participants reported that the yogurt with olive oil was very filling. Moreover, none of the members of the group showed any weight gain or increase in body fat percentage.
Since olive oil and rapeseed oil contain similar fatty acids, the research team made further investigation on the aroma compounds in olive oil. As such, the second part of the study involved two groups. One group was given yogurt with olive oil aroma extracts and a control group that was given plain yogurt.
The results showed that the calorie intake of the olive oil group remained the same while the control group had an extra intake of 176 kilocalories per day and had less of the satiety hormone serotonin in their blood. Furthermore, researchers identified two aroma substances that effectively reduce glucose absorption from the blood in liver cells. They discovered that Italian olive oil contained more of these aroma compounds compared with olive oils from Spain, Greece and Australia.
Technische Universitaet Muenchen. Olive oil makes you feel full. ScienceDaily.