Roheeni Saxena wrote that the thing that makes teens difficult to deal with can be used against them:

• In an experiment teens were shown how unhealthy foods can be misleadingly marketed by companies.  They were then told that eating healthy is an act of rebellion and “sticking it to the man”.
• The strategy worked. Teens were more likely to pick carrots over cookies after the training.
• Health campaigns typically focus on the long term well being effects of unhealthy eating, but this experiment indicated that alternative strategies with more immediate rewards should be considered.

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Source: ArsTechnica