Popcorn Worker’s Lung
Diacetyl is a chemical used to create or enhance the buttery flavor in microwave popcorn, and has been linked to serious respiratory problems known as “popcorn worker’s lung” among workers employed at factories where the chemical is used.
California legislators are not waiting on the results of a 2003 EPA (Environmental Protection Agency) study, which has not been released to date, but are working to have the use of diacetyl banned in the state of California.