Marijuana use rises sharply among one group of Americans, new study finds
A growing number of American parents are using cannabis, according to a new study. (Getty Images)
A growing number of American parents are using cannabis, prompting questions about potential child exposure and safety, according to a new study.
Cannabis use increased substantially among parents between 2012 and 2024, with researchers estimating that at least 5.9 million U.S. children were living with a parent who used marijuana on most days in 2024.
By 2024, 8% of parents used cannabis on most days, 5.2% used it daily and 6.7% met the criteria for cannabis use disorder (CUD).
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Daily cannabis use among parents was about four times as common as daily alcohol use, the study found.
While increases occurred across nearly all demographic groups, some of the largest were seen among younger and unmarried parents, those in lower-income households and those without a four-year college degree.
Researchers from the University of California, San Diego, analyzed data from the National Survey on Drug Use and Health (NSDUH), involving nearly 482,000 U.S. individuals ages 12 and older.
The findings were published in the journal Addictive Behaviors.
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"Marijuana has become so socially acceptable that people are starting to overlook the risks," Dr. Jarid Pachter, who specializes in family medicine and addiction medicine at Stony Brook Medicine in New York, told Fox News Digital.
"Just because it's legal doesn't mean it's harmless," added Pachter, who was not involved in the study.
The physician also expressed concern about the example parents are setting for their children.
"If marijuana use is a regular part of life at home, children may start to see it as something that's normal and relatively harmless," he said, pointing to studies that show children whose parents use marijuana are more likely to use it themselves as they get older.
"That doesn't necessarily mean the parent's marijuana use is causing the child to use, but there's clearly an association."
The doctor also cautioned that THC, the main psychoactive chemical in the marijuana plant, is known to affect attention, memory, coordination and reaction time.
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"When you have young children, you need to be alert and able to respond to their needs," he said. "I'm not suggesting that someone who uses marijuana can't be a good parent. My concern is about being impaired when you're responsible for a child's safety."
"I also think we need to be careful about normalizing daily marijuana use," he went on. "We wouldn't automatically consider daily alcohol use harmless, and we shouldn't look at marijuana that way, either."
FILE - A person smokes marijuana during a 420 celebration at Washington Square Park in New York City on April 20, 2024. (Photo by Leonardo Munoz / AFP via Getty Images)
Pachter emphasized that accidental ingestion is another concern, especially with edibles like marijuana gummies or chocolate, which can look like regular candy to a young child.
"We've seen significant increases in emergency room visits involving children who accidentally consume marijuana," he told Fox News Digital.
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"Some develop severe sedation, confusion and difficulty walking. In more serious cases, children can have breathing problems and require hospitalization."
The more frequently someone uses marijuana, the greater risk of developing cannabis use disorder, the doctor cautioned.
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"We also know THC can affect memory, attention and coordination. Frequent use, particularly of high-potency products, is associated with an increased risk of certain psychiatric problems in susceptible individuals."
Smoking marijuana around children can also pose a risk of secondhand exposure.
"Marijuana smoke contains many of the same harmful chemicals found in tobacco smoke," the physician said. "We know children can be exposed to THC through secondhand smoke, although we're still learning about the long-term health effects."
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For those who use marijuana every day, Pachter suggests they ask themselves whether they can go without it, and whether it is affecting work, relationships or responsibilities.
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"And if you're a parent, you need to consider whether your marijuana use is affecting your ability to care for your children."
The study had some limitations. The researchers did not assess parenting quality or children's health, and the findings do not establish that parental cannabis use causes adverse child outcomes.Additionally, the data relied on self-reported substance use, which could be subject to recall or reporting bias.
The researchers called for further studies examining whether the frequency of parental cannabis use, cannabis use disorder, household exposure and storage practices are associated with children's health or developmental outcomes.
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The researchers reported funding support from the California Department of Cannabis Control, the Canadian Institutes of Health Research, the National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism.