Hi! Today I’m discussing why Americans are becoming more allergic, known as the Hygiene Hypothesis. I first need to give some background on immunology. In the late 1990’s, immunologists discovered the other half (maybe even more than half) of the immune system. We learned how the immune system immediately responds to bacteria and viruses and the cells needed for these responses. The immunologists won the Nobel Prize in 2011. Their discoveries led to more breakthroughs in the 2000’s. A lot has happened in less than 15 years!
– Dr. Weily Soong