Chris Bosh wants to spread awareness of blood clots after he nearly "dropped dead" earlier this year. Back in February, Bosh, who was forced to retire because of his history of blood clots, said that he woke up "covered" in his own blood. A pulmonary embolism normally occurs when a blood clot breaks loose and travels to the lungs. Bosh also offered advice to Victor Wembanyama, who suffered a blood clot that ended his second NBA season in 2024-25. Deep vein thrombosis (DVT) is a condition in which blood clots form in one or more of the deep veins in the body, according to the Mayo Clinic.