Background information

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  • Caffeine is known to have a mild stimulant effect. For many years, research has been conducted into the positive role caffeinated coffee can play in improving attention, alertness, reaction time and memory.
  • In 2011, EFSA evaluated a substantial number of studies on the effects of caffeine on mental performance, and concluded that there is sufficient scientific evidence to support a cause and effect relationship for the effect of caffeine on alertness and attention1.
  • A 2016 review of the effects of coffee and caffeine on brain health concluded that caffeine has many positive actions on the brain: it can increase alertness and well-being, help concentration, improve mood, and limit depression. Caffeine may disturb sleep in sensitive individuals. It may raise anxiety in a small subset of particularly sensitive people. Caffeine does not seem to lead to dependence, although a minority of people experience withdrawal symptoms2.

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