Olive oil is once again at the heart of the Mediterranean diet, but this time for a reason that goes beyond the heart. A new study led by Universitat Rovira i Virgili (URV), IRB CatSud (formerly IISPV) and CIBERobn points out that virgin olive oil can help preserve cognitive function in older people through the intestinal microbiota. The main conclusion is simple, but important for anyone who buys a bottle in the supermarket. Not all olive oils …