Many beverages contain caffeine.In the United States 90 per cent of
adults report regular caffeine consumption, averaging approximately
280mg daily and estimates for Europe are higher.Youths globally
consume caffeine with particularly high intakes in Germany and
New Zealand.In the United States, adolescents consume an average
of 60–70mg of caffeine daily.A recent survey revealed that children
aged 5–7 years consume approximately 52mg of caffeine daily and
children 8–12 years consume 109mg daily.