A new study “Olive oil makes you feel full” by Technische Universität München (TUM) shows that olive oil promotes higher levels of the satiety hormone serotonin, resulting in a feeling of fullness which in turn leads to eating less. It was also demonstrated that the aroma compounds in olive oil also played a role in satiety.
Study participants ate 500 grams of low-fat yogurt enriched with one of four fats or oils (lard, butterfat, rapeseed oil and olive oil) every day, as a supplement to their normal diet. The study found those using olive oil experienced the biggest satiety effect. None of the group using olive oil recorded an increase in their body fat percentage or their weight.
In 2006 the Sun Study found that there was no evidence that those who enjoyed an olive oil rich Mediterranean diet would gain weight despite the high fat content of olive oil.
The TUM study gives olive oil lovers an excuse to drizzle and pour, rather than ration.