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Keeping your mind sharp and your thinking active in your 70s, 80s and even 90s? It's possible with simple, practical advice from Dr Sanjay Gupta. The author debunks myths about brain ageing, talks about a special "brain diet" that will stop age-related memory changes, and offers an effective 12-week course to improve cognitive abilities at any age.

The doctor researches:

whether exercise (and what kind of exercise) is good for brain activity;
which video games will insure against Alzheimer's disease;
why the brain needs new acquaintances and communication with people;