Under very rare conditions, Alzheimer’s disease may be transmitted
Five patients who got tainted growth hormone injections developed early Alzheimer’s decades later

A PET scan of the brain of a man who received contaminated growth hormones as a child and later developed Alzheimer’s disease shows higher-than-usual levels of the sticky protein A-beta (purple and orange areas) associated with the disease.
G. Banerjee et al/Nature Medicine 2024