Many families are engaged in tense debates after a new study found a high percentage of N.F.L. players had developed degenerative brain disease.

© Gabriella Angotti-Jones for The New York Times

A new study shows that N.F.L. players have a high risk for developing degenerative brain disease. Does anyone in your family play football? We want to know your thoughts.

© Tamir Kalifa for The New York Times