DDR1 and Mental deterioration: Conversely, in I‐4, aging activation of astrocytes (Boisvert et al., 2018; Clarke et al., 2018 ) and microglia (Harry, 2013) are probably related to degenerative processes associated with cognitive decline (Harry, 2013; Santello et al., 2019 ), suggesting that DDR1 also plays a role in these cell types in this period of life.