London, Sep 19 - Too many chocolates could leave teenagers bristling with pimples.

A Norwegian study has identified crude associations between acne and high intake of chocolate and chips and low intake of vegetables.

University of Oslo researcher Jon Anders Halvorsen together with co-authors from Lhasa (China) and Boston (US) studied 3,775 adolescents to explore the possible causes of acne.

The 18- and 19-year-olds were given questionnaires to monitor their diets, lifestyle variables, and mental conditions. Participants reported on their own acne.

In girls, there was a significant link between acne and diet low in raw and fresh vegetables.