Does this cause cancer? How scientists determine whether a chemical is carcinogenic

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Here’s how chemicals can cause cancer, and how scientists classify chemicals based on on how carcinogenic they are — sometimes with controversial results.

Glyphosate, an herbicide used in products like Roundup, was classified by the IARC as carcinogenic to humans in 2015. Adriana Duduleanu/EyeEm via Getty Images

How do chemicals cause cancer?The mechanisms behind how toxic chemicals can lead to cancer are complex. How are chemicals classified for carcinogenicity?To help safeguard the public and reduce the incidence of cancer, several agencies have developed procedures to classify and categorize chemicals based on their potential to be carcinogenic.

After discussing and deliberating on the results, the panel makes a final consensus classification. This classification places the chemical into one of four groups: Group 1 indicates that the chemical is carcinogenic to people, Group 2A that it is probably carcinogenic to people, Group 2B that it is possibly carcinogenic to people, and Group 3 that it is not classifiable.

Source: Healthcare Press (healthcarepress.net)

 

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