The carotid body is a small organ that plays a role in controlling the breathing rate. In this paper, Di Giulio describes a part of the carotid body that becomes infiltrated with lymphocytes and fibrosis during aging. Much is still unknown about this organ and the effects that it’s aging has on us. As such, we think it is important to monitor scientific literature for data that tells us something we didn’t know, or that contradicts our current understanding of degenerative aging and how we might bring it under complete medical control.