^This. Unless you're eating those things listed 24/7,the amount of levels in the food products are not enough to harm you. Plus our systems have grown to be immune to amount of crap we eat. Unless its high levels,there is no need for concern. Same thing goes for tap water. There's a certain amount of contamination that is consider safe to drink. Matter of fact it's safer to drink from tap water then bottle water. google that shyt
There are bacteria that you SHOULD actually ingest, helps build the immune system.