Playing football may increase risk of Parkinson’s disease in men, study finds

A study published in the JAMA Network Open suggests that men who played football for a longer duration and at higher levels are at greater risk for developing Parkinson's disease.

Men with a history of playing organized football have higher odds of developing Parkinson’s disease, a new study from the Boston University CTE Center suggests.

A longer duration of play and playing at higher levels were associated with the greatest risk of diagnoses.

The cross-sectional study published Friday in the journal JAMA Network Open used data from a large online survey called Fox Insight, sponsored by the Michael J. Fox Foundation for Parkinson’s Research.

Researchers found that participants who had a history of playing the sport were 61 per cent more likely to receive a diagnosis of Parkinson’s or parkinsonism — an umbrella term that refers to brain conditions that cause symptoms such as tremors, slowed movements and stiffness — compared with those who played other organized sports.

The survey included 1,875 men, 729 of whom had a history of playing football. Most participants diagnosed with Parkinson’s played at an amateur level.

“Studying individuals with lower levels of football play is of high priority because most people play at the high school and college level. However, current research on the long-term neurological outcomes of football has focused on those who played professionally,” the study says.

Those who had a reported parkinsonism or Parkinson’s diagnosis were older, had a lower level of education, had a lower body mass index and were less likely to have a family history of the disease.

Family history and exposure to toxins and pesticides are listed as potential risk factors for developing Parkinson’s, along with traumatic brain injury (TBI). The study notes that repetitive head impacts in particular have been associated with Lewy body pathology, which are abnormal protein deposits found in people with Parkinson’s.