Authors of a new study out of the Sunnybrook Research Institute, published in the December 15, 2013 issue of Biological Psychiatry, conclude that, “The pathophysiological relationship between zinc [low] status and depression, and the potential benefit of zinc supplementation in depressed patients, warrant further investigation.” We have written and presented extensively on the association between certain types of depression and inflammation (the cytokine theory of depression). As it turns out, inflammation is a big driver of not just depression but other Diseases of Civilization (DOCs). Said inflammation causes imbalances in your psycho-neuro-immunological (PNI) status leading to alterations among your hormones, adrenal chemicals, neurotransmitters, immune cells, growth factors, vitamins, minerals, and nutrients. One such alteration recently in the news is the link between depression and zinc status (http://www.integrativepsychiatry.net/blog/the-depressionzinc-link/). Because inflammation can lead to low zinc, there is a good chance that if your depression is of the inflammatory ilk, then you will have low zinc levels. What distinguishes inflammatory depression from non-inflammatory depression? In general, depressions associated with systemic inflammation are more likely to be associated with "atypical" symptoms such as over-eating, over-sleeping, fatigue, leaden paralysis, andrejection sensitivity. Moreover, this type of depression is often associated with other medical conditions such as obesity, fibromyalgia, chronic fatigue, and PTSD. It is for such reasons that we put, among other choice ingredients, zinc in our top-selling supplement for depression, anxiousness, and insomnia: Serocor.