A little bit of stress can slow down the effects of aging, reduce your risk of dementia and help you live longer, according to a new study.
Scientists found that when parts of DNA were put under mild pressure, the protein which builds them was strengthened.
Experts say this happens because a ‘survival strategy’ kicks in in reaction to stress.
However, too much pressure is bad, raising the risk of heart attacks and other serious illness.
Previous research has shown that chronic stress exposes your body to unhealthy, persistently elevated levels of stress hormones like adrenaline and cortisol.
It is also linked to changes in the way blood clots, which increases the risk of heart disease.