- Adolescents: Adult limits may be applicable for adolescents >16 years of age. For adolescents in younger group (< 16 years of age) that enrolment will be at the discretion of the investigator, but drinking should be no more than 50% of the allowance for adults (e.g. children of 14 are drinking no more than 7 drinks (70 g week, [Tur, 2003]).