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Despite NFL settlement, still no proof football causes Alzheimer's or CTE

Date:
August 30, 2013
Source:
Loyola University Health System
Summary:
Despite the NFL’s $765 million settlement with retired players, there still is no credible scientific evidence that playing football causes Alzheimer’s disease or other neurological disorders, according to a neuropsychologist.

Despite the NFL's $765 million settlement with retired players, there still is no credible scientific evidence that playing football causes Alzheimer's disease or other neurological disorders, according to Loyola University Medical Center clinical neuropsychologist Christopher Randolph, PhD, who has published multiple studies on the topic.

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"The lawsuit is not a scientific issue, it's a legal and political issue," Randolph said. "There is absolutely no credible scientific data to suggest an increase of neurological risk from playing professional football."

Under the tentative settlement, the NFL would pay up to $5 million for each player who has Alzheimer's disease and up to $4 million for each death from chronic traumatic encephalopathy (CTE). But a recent study by Randolph and colleagues of retired NFL football players found no evidence that CTE even exists. The study was published in the Journal of the International Neuropsychological Society.

Randolph said there currently are no conclusive data that retired NFL players suffer a unique neuropathology. CTE is a vague condition, with no established clinical criteria and no consistent pathological criteria to diagnose it. And recent studies have found that NFL players have overall mortality rates that are only half of expected rates based upon men in the general population. Suicide rates are only about 40 percent of the rates in the general population.

"We still do not know if NFL players have an increased risk of late-life neurodegenerative disorders," Randolph said. "If there is a risk, it probably is not a great risk. And there is essentially no evidence to support the existence of any unique clinical disorder such as CTE."


Story Source:

The above story is based on materials provided by Loyola University Health System. Note: Materials may be edited for content and length.


Journal Reference:

  1. Christopher Randolph, Stella Karantzoulis, Kevin Guskiewicz. Prevalence and Characterization of Mild Cognitive Impairment in Retired National Football League Players. Journal of the International Neuropsychological Society, 2013; 19 (08): 873 DOI: 10.1017/S1355617713000805

Cite This Page:

Loyola University Health System. "Despite NFL settlement, still no proof football causes Alzheimer's or CTE." ScienceDaily. ScienceDaily, 30 August 2013. <www.sciencedaily.com/releases/2013/08/130830131044.htm>.
Loyola University Health System. (2013, August 30). Despite NFL settlement, still no proof football causes Alzheimer's or CTE. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2013/08/130830131044.htm
Loyola University Health System. "Despite NFL settlement, still no proof football causes Alzheimer's or CTE." ScienceDaily. www.sciencedaily.com/releases/2013/08/130830131044.htm (accessed October 31, 2014).

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