PREVIEW
Recent encounters with El Niño have increased concerns about global warming and the prospects for longer, hotter summers. Heat can be devastating to vulnerable persons, especially the elderly and persons with mental illness or physical disabilities. Young children and endurance athletes are also at risk. The good news is that heat-related illnesses are preventable. Community support, planning, and education are essential. Drs Hett and Brechtelsbauer describe the causes of heat-related illness and discuss what can be done to prevent severe consequences.