Data from experimental and epidemiological studies indicate that insulin‐like growth factor (IGF)‐1 and its binding proteins play a role in the biology of aging and in the pathogenesis of several common cancers (Yu & Rohan, 2000; Renehan et al., 2004; Yakar et al., 2005; Fontana et al., 2010; Kopchick et al., 2014). Here, IGF1 is linked to cancer.