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Maricopa County Heat Deaths Hit Home: 149 Fatalities Indoors, Many Elderly and Chronically Ill
A review of Maricopa County medical examiner data reveals that at least 149 of 486 confirmed heat-related deaths occurred inside homes, with older adults and people with chronic conditions and heat-compromising medications among the most vulnerable.
PHOENIX â Extreme heat in Maricopa County is killing people inside their own homes, not just outdoors, according to a review of county medical examiner data.
Of 486 confirmed heat-related deaths in the dataset, at least 149 people died in their own homes, while another 100 died at hospitals or health care facilities. Officials caution that the location of death does not necessarily indicate where a person was exposed to heat.
Many of those who died indoors were 60 or older and had known health conditions, including diabetes, heart disease, and kidney or lung problems, the data show.
Dr. Freya Spielberg, a professor and chair of research at the University of Arizona College of Medicine â Phoenix, said common medications can impair the body's ability to cope with high temperatures.
"A lot of people are on medications that actually decrease their body's ability to adapt to heat and put them at higher risk of heat related illness and really need to take extra precautions when being outside in the heat," Spielberg said.
Stimulants also raise a person's risk, she said.
"And people that are on stimulants, it has physiological changes that put their body at higher risk of heat-related death," Spielberg said.
Spielberg said many residents are unaware of those dangers. Educators have been working to add patient education about heat risk to training for medical students and health care providers.
"We are obligated as healthcare providers and as government and public health institutions to prevent deaths that are preventable," she said.
The county has reported 548 heat-related deaths so far this year, according to the latest figures cited in the broadcast report. The medical examiner data analyzed represents only a portion of the reported deaths.
The findings underscore a persistent public health challenge in a region where summer temperatures routinely climb past 110 degrees. Older adults, people with chronic illnesses, and those taking medications that affect hydration or temperature regulation may be especially vulnerable even when they stay indoors, particularly if cooling systems fail or are too costly to run.
County heat surveillance data is available through the Maricopa County Department of Public Health.