I know what a "20 year study" is and I know what "studies" are - but that doesn't give "20 years studies" an unambiguous meaning. Your parallelism remains false.
Your Retread Troll opinion versus 20 years studies.
long-term use raises the risk of cancer, bronchitis and heart attack.
Just want you to know - tonight I had apricot yoghurt... good night CI.