Study finds fiftyfold increase in U.S. methamphetamine mortality rate between 1999 and 2021

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The U.S. methamphetamine mortality rate increased fiftyfold between 1999 and 2021, with most of the added deaths also involving heroin or fentanyl, researchers report in the American Journal of Public Health.

“We looked at trends from 1999 to 2021 and we saw this staggering increase in methamphetamine mortality accompanied by a proportional increase in those deaths that also involved heroin or fentanyl,” said Rachel Hoopsick, a University of Illinois Urbana-Champaign professor of kinesiology and community health who led the research.

According to data collected by the U.S. Centers for Disease Control and Prevention, 608 deaths were attributed to methamphetamine use in 1999.  That number increased to 52,397 in 2021. Hoopsick and R. Andrew Yockey at the University of Texas, Fort Worth, found that 61.2% of the methamphetamine overdose deaths in 2021 co-involved heroin or fentanyl. Much of the increase in methamphetamine-related mortality occurred between 2010 and 2021 and is showing no sign of abating, Hoopsick said.

We knew from behavioral studies that the use of stimulants, in general, as well as the use of stimulants with opioids has been increasing over the past decade or two. But we didn’t know how deadly it was becoming. I think what is different now versus 10 years ago is we have a much more toxic unregulated drug supply here in the U.S.”

Rachel Hoopsick, University of Illinois Urbana-Champaign professor of kinesiology and community health

Methamphetamine by itself can be deadly, but its toxicity does not appear to have increased in recent years, Hoopsick said. The potency of illicitly manufactured fentanyl, however, has skyrocketed.

“Some of the newer methamphetamine deaths may have involved the unintentional co-use of fentanyl,” she said. “It’s possible that the supply of methamphetamine was adulterated with fentanyl or contaminated by fentanyl at some point in the drug-manufacturing process.”

Some methamphetamine users also choose to add an opioid to the mix to counter some of the stimulant effects of the meth, she said.

“There are some myths within the drug-using community that opioids can be used to prevent or reverse an overdose with stimulants,” Hoopsick said. “But it does not work. They may be making it more toxic, not less.”

The impetus for the study came from Hoopsick’s observations during a community-based research project at the Champaign-Urbana Public Health District. The goal was to better understand the experiences, needs and preferences of people in the Champaign-Urbana community who inject drugs.

“I was really surprised to hear from the folks at the syringe service program that just as many of them were injecting methamphetamine as they were opioids, and many of them were co-using both types of substances,” Hoopsick said. “That got me thinking that the increase in methamphetamine mortality might be driven by the co-use of meth with illicitly manufactured fentanyl, in particular, which we’ve seen in the opioid overdose crisis is driving a lot of the deaths in the United States.”

The national data seems to support that hypothesis, she said.

Harm reduction is one of the only effective approaches for reducing drug-related deaths, Hoopsick said. Syringe exchange is one approach known to reduce the transmission of HIV or other infectious diseases.

Another avenue would be to help people test their drugs for the presence of substances like fentanyl. For example, people who inject drugs and participate in the syringe service program at the local health district asked for and received fentanyl-testing strips to help them determine whether their drugs also contain fentanyl.

Even better would be a service that tests the drugs to determine their composition and potency, Hoopsick said. Some communities also offer safe injection sites, ensuring that users are not alone and lessening the potential for overdose.

“A lot of our harm reduction efforts are geared predominantly toward people who are using opioids, but we need to think about how we can also reach those who are using stimulants or who may be co-using opioids and stimulants,” she said.

Source:
Journal reference:

Hoopsick, R.A., et al. (2023) Methamphetamine-related mortality in the United States: Co-involvement of heroin and fentanyl, 1999-2021. American Journal of Public Health. doi.org/10.2105/AJPH.2022.307212.

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