You are so right with whats in the food. I studied medicine in the early 1980s I must admit. We had to take a class called hygiene, which dealt with keeping labs and equipment clean, and also general health etc. The first thing the professor said was that when we die we all should be put into a dump for hazardous material. He said we would be full with heavy metals and other contaminants from what we eat, drink, and inhale. Ok he was a little bit extreme but no to far off. Next he told us that what does not kill us will make us strong. The argument was that sterilizing baby bottles with chemicals will create children that can get potentially very sick, because their body does not build a strong immune system because it is not exposed to the everyday bacteria. Rinsing with hot water is all needed and the few bacteria strains that make if will make the child immune. He has some points we should take into consideration. This will exclude facilities that are full of bacteria or viruses. So for example a facility that takes care of children must use more caution, while at home you can ease of a little bit.