Leafy green vs. leafy...other colors battle as we pick through the differences between these two similar and super-nutritious foods, at least one of which may be very good for your brain (but we won't be sure for a while). 

• Sulforaphane as a Potential Protective Phytochemical against Neurodegenerative Diseases https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3745957/#B94
• Sulforaphane activates heat shock response and enhances proteasome activity through up-regulation of Hsp27  PubMed
• Protection against amyloid beta cytotoxicity by sulforaphane: role of the proteasome. PubMed
• Broccoli - New World Encyclopedia