Just 12 days after posting a plea online for a kidney donation, the New York Jets announcing former center Nick Mangold has died. Mangold posted online telling fans about a genetic defect that caused chronic kidney disease which ultimately led to his death. The post saying, "I always knew this day would come, but I thought I would have more time." Adding he didn't have any family donors available and asked the public to consider registering to see if they might be a match.There are nearly 90,000 people in n ...