That may be what's behind the new findings, he said, but it also could be that obesity-related illnesses affect recovery from trauma.
"But minimally, [the findings] appear to mean that in car crashes, size does matter, because it affects outcome. How, why and what we can do about it now become the important questions," Katz said.
Although the study found an association between obesity and death rates in car crashes, it did not establish a cause-and-effect relationship.
For more about obesity, visit the U.S. National Library of Medicine.
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