Increased expression of IL-6 in normal aging (Godbout and Johnson 2004; Marsland et al. 2006; Weaver et al. 2002), augmented in certain neurodegenerative diseases, has been shown to interfere with cognitive functions (Bermejo et al. 2008; Cacquevel et al. 2004; Maggio et al. 2006; McAfoose and Baune 2009; Müller et al. 1998; Luterman et al. 2000; Trapero and Cauli 2014). Here, IL6 is linked to neurodegenerative disease.