As in most situations, moderation is best.
http://www.sciencedaily.com/releases/2008/10/081001093506.htm
ScienceDaily (Oct. 5, 2008) — A link between reduced levels of the 'stress hormone' cortisol and antisocial behaviour in male adolescents has been discovered by a research team at the University of Cambridge.
Levels of cortisol in the body usually increase when people undergo a stressful experience, such as public speaking, sitting an exam, or having surgery. It enhances memory formation and is thought to make people behave more cautiously and to help them regulate their emotions, particularly their temper and violent impulses.
The new research, funded by the Wellcome Trust, shows that adolescents with severe antisocial behaviour do not exhibit the same increase in cortisol levels when under stress as those without antisocial behaviour. These findings suggest that antisocial behaviour, at least in some cases, may be seen as a form of mental illness that is linked to physiological symptoms (involving a chemical imbalance of cortisol in the brain and body).
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