Why is damn near everything in the us have a cancer warning on it? /u/EmotionalBaseball529 No such thing as stupid questions

By this I mean the proposition 65 warnings. If it can possibly cause cancer and reproductive harm why the hell even bother selling it??? I used to think it was bc of California air but that literally would make zero sense. I was drinking a boba tea when I noticed the cancer warning and I threw it out out of fear

By this I mean the proposition 65 warnings. If it can possibly cause cancer and reproductive harm why the hell even bother selling it??? I used to think it was bc of California air but that literally would make zero sense. I was drinking a boba tea when I noticed the cancer warning and I threw it out out of fear