Haven't seen anyone mention this yet but former ufc star Chael Sonnen doubled down two days ago and said Bronny's heart attack was likely a result of epo and testosterone use. Sonnen had revealed previously that he has the same steroid guy as LeBron and LeBron gets EPO off the guy which is why he was able to perform and play entire games this year (no other player in the league is asked to play entire games) for the Lakers despite being 38 years old.