Football players three times more likely to develop brain disease

The video discusses the link between repetitive brain injuries and neurodegenerative diseases such as ALS, Parkinson's, and Alzheimer's. It highlights a study on NFL players, showing a higher prevalence of these diseases among them, particularly in speed positions like wide receivers and running backs.

What evidence is provided regarding the link between repetitive brain injury and neurodegenerative diseases?

Which positions in the NFL are more likely to have neurodegenerative diseases?