03 Dec 2018 Blackmores Institute Lutein levels influence physical activity 03 Dec 2018 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Want to do more physical activity but can’t get off the couch? According to researchers from the University of Adelaide, increasing your levels of lutein could be the key to the ‘motivation’ you’ve been looking for. × To continue reading this article, please Log In or Sign Up for access.