Compared to people who didn’t use marijuana or tobacco, marijuana users had 27% higher levels of lead in their blood, according to a new study.

Some marijuana users may have elevated levels of lead and cadmium — two heavy metals linked to long-term health issues — in their blood and urine, a new study shows.

Among a group of more than 7,200 adults, the 358 who reported using marijuana within the past 30 days were found to have 27% higher blood lead levels than those who said they didn’t use either marijuana or tobacco.

The marijuana users also had 22% higher levels of cadmium in their blood, according to the research, which was published Wednesday in the journal Environmental Health Perspectives. Urine samples showed similar results.

The researchers, a team at Columbia University, knew going in that cannabis plants can absorb heavy metals from soil and, in fact, are particularly good at doing so. The contaminants travel through the stalk of the plant into the leaves and flowers.

But the new findings demonstrate that heavy metals in cannabis plants can also wind up in the human body.

  • Immersive_Matthew
    33·
    1 year ago

    Since Cannabis was legalized in Canada, the government tests it to ensure heavy metals are below set health limits almost with a list of other chemicals found in pesticides. Another reason the war on drugs is actually a massive disservice to the American people…well, USA people as Canada is in America too.