IL6 and Alzheimer disease: In addition, since one component of cellular senescence is the production of pro‐inflammatory cytokines known as the SASP (Campisi & Robert, 2014), a study demonstrating that astrocytes surrounding Aβ plaques are positive for the SASP component IL‐6 (Benzing et al., 1999) lends support for astrocyte senescence as a novel mechanism associated with AD pathogenesis.