> And while [beneficial compound] naturally occurs in olive oil and mature olive fruit, the researchers note that its concentration in those sources is most likely too low to deliver these metabolic benefits.

I'm really sure that drinking olive oil increases bodyweight, not decreases it.

well I wouldn't be so sure. if you cook with it or add it to dishes (not drink it on its own, who would do that) it certainly has beneficiary effects and it is less of a cause for weight gain than all carbs.