Eating certain fruit and vegetables could boost the memory, particularly broccoli, according to British research. The research provides scientific backing to the theory and has major implications for the prevention and treatment of Alzheimer’s disease, the Royal Pharmaceutical Society said.Extracts found in five fruits and vegetables -- broccoli, potatoes, oranges, apples and radishes -- were found to contain substances that act in the same way as drugs used to treat the disease. Broccoli had the most.The study by King’s College London, part of the University of London, was to be presented on Tuesday at the British Pharmaceutical Conference in Manchester, northern England.