{'fraction_non_alphanumeric': 0.029173419773095625, 'fraction_numerical': 0.0032414910858995136, 'mean_word_length': 5.3061224489795915, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Sickle Cell Trait, Heroic Exercise, and Fatal Collapse.

In brief Although sickle cell trait is generally benign and consistent with peak athleticism, it poses a small risk of gross hematuria and splenic infarction at altitude. More alarming is the growing evidence that, in some people with sickle cell trait, maximal exercise-especially in hot weather or when new at altitude-can evoke a life-threatening syndrome of sickling, fulminant rhabdomyolysis, lactic acidosis, collapse, acute renal failure, and hyperkalemia. More than 30 such cases are described, along with practical tips for recognition and prevention.