Even for some sun can be harmful – Västerbotten Folkblad

News. Do you avoid the sun? This increases the risk of dying prematurely, according to a study at Karolinska University Hospital.

Avoiding the sun can be as great a risk factor such as smoking, sedentary and overweight when it comes to cardiovascular disease and risk of premature death, according to the study, said SR echo.

the study followed 30 000 women in 20 years. Those not at all suns are at twice the risk of dying prematurely. The risk is reduced if people spend more time in the sun – to a certain limit. For excessive sunlight can also be dangerous, according to Pelle Lindqvist, an associate professor at Karolinska Huddinge.

But why a moderate sun exposure may reduce the risk of such cardiovascular disease is still unclear.

– A main hypothesis has been to prevent vitamin D deficiency, which is common in our latitudes, says Pelle Lindqvist echo.

– another has been to tanning releases nitric oxide which is positive for the vascular system. A third is that the body has a built-in reward system with an endorphin release. Endorphins reduce the stress levels in the body and both chronic and acute stress are some of the major diseases.

The study is published in the Journal of Internal Medicine.