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(CBS) Retired football players are at heightened risk for mild cognitive impairment wholesale buccaneers jersey (MCI), a subtle form of dementia that is considered a prelude to Alzheimer's disease.

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That's the word wholesale flames jersey from wholesale kings jersey Dr. Christopher Randolph, a Loyola University neurologist whose preliminary study of 513 wholesale avalanche jersey retired NFL players, average age 61, and their wives was presented at the Alzheimer's wholesale titans jersey Association International Conference 2011 wholesale bruins jersey in Paris.

"It appears there may be a very high rate of cognitive impairment in these retired wholesale whalers jersey football players, compared to the general population in that age wholesale ducks jersey range," he said in wholesale steelers jersey a written statement. Thirty-five percent of the players who participated in the survey had scores suggestive of MCI. In other words, wholesale sabres jersey more than one in three retired players may wholesale thrashers jersey be wholesale stars jersey suffering from wholesale eagles jersey MCI.

MCI causes wholesale islanders jersey problems wholesale oilers jersey with memory, language, and/or another wholesale canada jersey mental wholesale devils jersey function. The impairment is obvious wholesale red wings jersey to sufferers and those wholesale canadiens jersey around them but is not severe enough to interfere with daily wholesale rams jersey living.

The increased risk presumably is the result of repeated blows to the head that pro footballers sustain. Animal studies have shown that wholesale predators jersey blows to the head wholesale wild jersey can kill brain cells even when wholesale redskins jersey they are not severe enough to cause a concussion, according the statement.

Previous research on wholesale chargers jersey college football players has shown that, on average, players wholesale hurricanes jersey receive more than 1,000 10-g or higher blows wholesale rangers jersey to wholesale seahawks jersey the head each season. More than 250 of wholesale jackets jersey these blows are greater than 30 g-force. One G is equal to the force wholesale blackhawks jersey of gravity.