8 new things to know about caffeine

A major review of caffeine’s effects on cognitive, physical and occupational performance concludes it is a good remedy for offsetting physical and cognitive degradation associated with sleep loss.

Caffeine improves alertness, vigilance, attention and reaction time, but less consistent effects were observed on memory and higher-order executive function, such as judgment and decision making.

Caffeine, in doses exceeding 200mg, also has

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