Weight-loss surgery can boost brain power and 'cut the risk of developing Alzheimer's'

Researchers at the University of Sao Paulo in Brazil found bariatric surgery have a positive influence on brain activity, linked to planning, strategy and organisation.
http://www.dailymail.co.uk/health/article-2734802/Weight-loss-surgery-boost-brain-power-cut-risk-developing-Alzheimers.html