David Bloom was an excellent journalist. One of the best in his field. He died from a pulmonary embolism. They think the embolism was caused from sleeping in tight quarters. That thingy he was riding around Iraq in had very tight quarters, causing him to sleep every night in a fetal position. When you have little or no circulation going on in your legs, an embolism can form and travel to your heart. That's what happened to him.

He was too young to die (38). He will be sorely missed.