While marijuana remains the most commonly used illicit drug in the United States, it is becoming increasingly legalized, making it more important than ever to identify the potential harms of the drug. Now, a new study finds that regular, heavy marijuana use may reduce bone density, increasing the risk of osteoporosis and bone fractures.
[A man smoking cannabis]
Researchers found heavy marijuana use was linked to a reduction in bone density.

According to the National Institute on Drug Abuse (NIDA), a 2014 survey identified around 22.2 million past-month marijuana users, with use of the drug highest among teenagers and young adults.

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