Jan Mewes, Umeå University (IMAGE) Umea University Caption 'In societies that lack social security in the form of universal health insurance, worsening health or even fear of worsening health can undermine people's optimism and their belief in the future,' says Jan Mewes, associate professor at Umeå University in Sweden. Credit Umeå University Usage Restrictions This photo may be used in contexts related to this news release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.