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Marijuana users have more heavy metals in their bodies, study finds

Medical marijuana can be used for treatments without causing addiction
Marijuana users had statistically higher levels of lead and cadmium in their blood and urine than non-marijuana users, a new study finds.

“Compared with non-users, marijuana users had 27% higher levels of lead in their blood and 21% higher levels in their urine,” said lead author Tiffany Sanchez, assistant professor of environmental health sciences at the Mailman School of Public Health at Columbia University in New York.

There is no safe level of lead in the body, according to the United States Environmental Protection Agency (EPA).

Marijuana users also had 22% higher levels of cadmium in their blood than non-users, and 18% higher levels in their urine, Sanchez said.

“Both cadmium and lead remain in the body for a long time,” she said. “Cadmium is absorbed in the renal system and filtered through the kidneys. So when you look at urinary cadmium, that’s a reflection of the total body load, how much you ingested over a long period of chronic exposure.”

Cadmium has been linked to kidney disease and lung cancer in people and fetal anomalies in animals, according to the EPA, which has set specific limits for cadmium in the air, water and food.

Source: CNN Brasil

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