Among the 36 amyloid proteins recognized by the ISA in 2018 [59], medin (AMed) is the most common amyloid found in the human body [83,84]—being an internal component of milk fat globule-EGF factor 8 (MFG-E8), also known as lactadherin—that is now associated with vascular Aβ in cerebral amyloid angiopathy (CAA) pathology [85]. The gene discussed is MFGE8; the disease is cerebral amyloid angiopathy.