Orange juice is not a fruit but it is a marketing factoid

Madely Health Headlines Commentary for May 19, 2015

Source:
No proof orange juice boosts brain power

Two daily glasses of orange juice ‘boosts elderly brainpower’: Significant improvements can be seen in less than two months, research shows. Mail Online, May 16 2015

Reference:

Kean RJ, Lamport DJ, Dodd GF, et al. Chronic consumption of flavanone-rich orange juice is associated with cognitive benefits: an 8-wk, randomized, double-blind, placebo-controlled trial in healthy older adults. The American Journal of Clinical Nutrition. Published online January 14 2015