11 Nov 2014 Blackmores Institute Optimal serum selenium concentration linked to less depressive symptoms in youth study 11 Nov 2014 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News An “optimal” range of serum selenium is linked to a reduction of depressive symptoms and negative mood in young people, a New Zealand study published online this week shows. In an observational study almost 1000 young adults aged between 17 and 25 years reported their negative and positive mood daily in an Internet diary for just on two weeks. × To continue reading this article, please Log In or Sign Up for access.