Which age of children can drink coffee?

It is generally recommended that children and adolescents under the age of 18 avoid consuming caffeine, including coffee. The American Academy of Pediatrics recommends that children and adolescents limit their intake of caffeine to less than 100 milligrams per day, which is equivalent to about one 8-ounce cup of coffee. Some studies have suggested that consuming caffeine during childhood and adolescence may be associated with negative effects on brain development and behavior, including increased anxiety, insomnia, and difficulty concentrating.