This study found that camellia oil improved memory and learning in rats with chemically-induced cognitive decline. The oil worked by reducing oxidative stress, calming inflammation in the brain, and improving gut bacteria balance—but this research was done in rats, not humans, so we can't say it prevents or treats Alzheimer's in people yet.

Researchers gave rats aluminum chloride to damage their cognitive function, then treated some with camellia oil. They measured changes in memory, brain proteins, antioxidant levels, and gut bacteria composition.

Funding not disclosed in abstract