Women with nausea and vomiting in early pregnancy are more likely to use marijuana, a JAMA Internal Medicine research letter finds.
Researchers studied 220,000 pregnancies in California during which women had urine tests for marijuana and also self-reported marijuana use in the first trimester. Marijuana use was more common in pregnancies with severe nausea and vomiting (11%) and mild nausea and vomiting (8%) than among those without nausea and vomiting (5%).
After multivariable adjustment, women with severe nausea and vomiting were nearly four times as likely to use marijuana, and those with mild symptoms were over twice as likely to use marijuana, relative to those without nausea and vomiting.
The researchers conclude, “The health effects of prenatal marijuana use are unclear, and national guidelines recommend that pregnant women discontinue use. Patients with [nausea and vomiting] should be screened for marijuana use and educated about effective and safe [nausea] treatments.”
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