Teenagers who tend to suppress their emotions or stress can significantly impact their health which can affect their immunity levels later, according to a new study.

The study, by the University of Pennsylvania in the US, explored whether the strategies adolescents used to deal with chronic stress caused by families including cognitive reappraisal -- trying to think of the stressor in a more positive way -- and suppression, or inhibiting the expression of emotions in reaction to a stressor, affected various metabolic and immune processes in the body.