There is no such thing as a B blood type being prone to any disease in old age, and there is no scientific evidence to suggest that the occurrence of disease is related to blood type.
With increasing age, the organism will be more susceptible to the damage of some diseases, but there is no direct link between the occurrence of diseases and the individual blood type, and there is no so-called which blood type is susceptible to what kind of disease in old age.
For the elderly, the reason why they are prone to diseases is mainly due to the degeneration of the internal tissues of the body, the environment, diet and psychological factors.
The occurrence of diseases will affect the quality of life of the elderly, therefore, it is recommended that the elderly pay attention to the maintenance of the body, timely and regular medical examination, and timely medical treatment for any physical discomfort.