Simplify the following text for a Grade 10 native English-speaking person.
Original: A five-year study of more than 2,000 middle-aged people in France found a possible link between weight and brain function , the findings of which were dubbed the `` Homer Simpson syndrome '' .
Simplified: A five-year study of more than 2,500 middle-aged people in France found a possible connection between weight and brain function , named as the `` Homer Simpson syndrome '' .