Drinking the caffeine equivalent of more than four espressos a day is harmful to health, especially for minors and pregnant women.
Drinking the caffeine equivalent of more than four espressos a day is harmful to health, especially for minors and pregnant women, the EU food safety agency has said.
"It is the first time that the risks from caffeine from all dietary sources have been assessed at EU level," the EFSA said in a statement, recommending that an adult's daily caffeine intake remain below 400 milligrammes a day.
Deciding a recommended limit was a request of the European Commission, the EU's powerful executive body, in an effort to find a Europe-wide benchmark for caffeine consumption.
But regulators said the most worrying aspect was not the espressos and lattes consumed on cafe terraces across Europe, but Red-Bull style energy drinks, hugely popular with the young.
"The main message of the report is that consumers must account for caffeine consumption from sources other than coffee," an EU spokesman told AFP.
"The health risk is not enormous, but it exists," he added.
In the report, the EU sets at 400 mg a day the threshold between a healthy intake of caffeine and a potentially harmful one.
"Caffeine intakes from all sources up to 400 mg per day consumed throughout the day do not give rise to safety concerns for healthy adults in the general population, except pregnant women," the European Food Safety Authority said in its 120-page report.
Expectant mothers should not exceed half that amount, the agency added, while under-18s should consume no more than three milligrammes per kilo of body mass, the agency said.
"An adolescent who drinks a coffee, a coke, and two or three red bulls every day would easily exceed this limit," said the spokesman from EFSA, who wished to remain anonymous.
In seven of the 13 EU countries studied in the report, Denmark came out on top for caffeine consumption with 33 percent of consumers exceeding the 400 mg limit.
The Netherlands followed at 17.6 percent and Germany at 14.6 percent.
The French, despite the Gallic coffee culture, came at a surprisingly low 5.8 percent.
Of all the respondents, about one third of the adults were regular consumers of energy drinks with 12 percent of those guzzling them down four or five days a week.
But alarmingly for regulators, a whopping 68 percent of 10- to 18-year-olds were regular users of energy drinks with 12 percent of them heavy consumers.
Caffeine levels in energy drinks can vary greatly, the agency said, between about 70 mg a litre to 400 mg.
More than four espressos a day ''can harm health''