This is one evolutionary explanation, but hasn't been proven, and is not widely accepted. I don't buy it, as by the time you're feeling effects from ingesting s

This is one evolutionary explanation, but hasn't been proven, and is not widely accepted. I don't buy it, as by the time you're feeling effects from ingesting something, you're already 45 minutes to an hour in. Additionally, our taste buds and nose do a great job of warning us about things we shouldn't be eating.