A Broward medical examiner released an autopsy report that said that the Miramar High School student who collapsed after football practice died of cardiac arrest due to the sickle-cell trait, the South Florida Sun Sentinel reported.
Medical Examiner Dr. Robert Buchsbaum said the cardiac arrest was also a result of alpha thalassemia, which leads to abnormal red blood cells, according to the newspaper.
The five-page report on 16-year-old Isaiah Laurencin said that hypertension, bronchitis and high temperatures were "co-morbid natural factors," the Sentinel reported.
Laurencin did not have a clear medical record. His history indicated that he had a heat stroke in 2010 and that he was obese at the time of his death, the report said. He did, however, pass his most recent physical, according to Broward County Schools spokeswoman Nadine Drew.
There was no one factor that singlehandedly caused his death.
"He was a great person on and off the field. He was not selfish. he wanted everybody to benefit," teammate Tarik McMorris told NBC Miami. "I couldn't believe when I heard he passed away."
The Sun-Sentinel's attempts to reach the family were unsuccessful. The school's principal and football coach declined to comment, the newspaper said.
The Miramar Patriots played an undefeated 2011 season and headed to the state finals in December.
