ВЫ не правы. Там есть наследственный фактор. И много чего еще влияет стиль жзни, окружающая среда.Alzheimer's disease isn't fully understood. Scientists believe that for most people, the disease has genetic, lifestyle, and environmental factors. ... There is a hereditary component to Alzheimer's. People whose parents or siblings have the disease are at a slightly higher risk of developing the condition.https://www.healthline.com/health/alzheimers-hereditary