Can vermiculite concrete cause cancer

Vermiculite itself is not classified as a carcinogen; however, some vermiculite products, particularly those sourced from Libby, Montana, have been found to contain asbestos. Asbestos exposure is known to increase the risk of lung cancer and other serious respiratory diseases. If vermiculite concrete contains asbestos, it could pose health risks, but not all vermiculite is hazardous. It's important to ensure that any building materials are tested for asbestos if there is a concern.