On one sweltering day during the hottest June on record in Phoenix, a 38-year-old man collapsed under a freeway bridge and a 41-year-old woman was found slumped outside a business.
Both had used methamphetamine before dying from an increasingly dangerous mix of soaring temperatures and stimulants.
Meth is showing up more often as a factor in the deaths of people who died from heat-related causes in the U.S., according to an analysis of data from the U.S. Centers for Disease Control and Prevention. Death certificates show about one in five heat-related deaths in recent years involved methamphetamine. In Arizona, Texas, Nevada and California, officials found the drug in nearly a third of heat deaths in 2023.
Meth is more common in heat-related deaths than the deadly opioid fentanyl . As a stimulant, it increases body temperature, impairs the brain’s ability to regulate body heat and makes it harder for the heart to compensate for extreme heat.
If hot weather has already raised someone’s body temperature, consuming alcohol or opioids can exacerbate the physical effects, “but meth would be the one that you would be most concerned about,” said Bob Anderson, chief of statistical analysis at the National Center for Health Statistics.