Furthermore, many studies have demonstrated the relationship between AD and neuroinflammation, which may be a consequence of a systemic inflammatory process that occurs throughout life, mainly related to proinflammatory cytokines such as tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), and interleukin 1β (IL-1β) [4]. Here, IL6 is linked to Alzheimer disease.