Is Olive Oil’s Main Fat Secretly Fueling Obesity?

Oleic acid, a key fat in olive oil, may not be as healthy as once believed. A recent study in Cell Reports found that this monounsaturated fat promotes the growth of new fat cells more than other dietary fats. It increases levels of a signaling protein called AKT2 while suppressing LXR, encouraging fat-storing precursor cells to multiply.

Researchers at Yale and NYU fed mice diets rich in different fats—from coconut oil to lard—but only oleic acid triggered significant fat cell formation. While it's hard to isolate fatty acids in everyday meals, the rising presence of oleic acid in processed and fast foods may pose health risks. This research highlights that it’s not just how much fat we eat, but what kind, that could influence obesity and long-term health.

23-06-2025