At no other time in human history have we faced such a large collection of potential immune challenges.  We’re dealing with a toxic food chain, pollutions of all kinds, high levels of stress, and thousands and thousands of human-made chemicals that have never existed in nature before.  But before you drown in despair, remember all the good things we can do to protect ourselves like eating veggies, getting a good night’s sleep and, after you read this, choosing safer products.