supplements

Gold medal secrets

Team Canada’s gold medal secrets

The projects that will shape their performance: sleep therapy, concussion research and, yes, beetroot

The truth about vitamin D

Is the idea that everyone needs more of it justified?

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Maclean’s Interview: neurologist Martin Samuels

Brain and aging, supplements, special diets, and why old people know more than young people

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Warning: ‘May be extremely calming’

The opposite of Red Bull, these ‘anti-energy’ drinks claim to provide instant relaxation