2014-09-06: Focus on immune system complexities and new vaccines, and more microbiome research news

Summary: New vaccines for breast cancer by stimulating the immune system — the liver is important; Using the new Dengue vaccine may initially raise the number of cases; A discussion of Tai Chi for anxiety and many other health benefits; A caller's experience with surviving prostate cancer because of PSA test; Transmission of scabies requires prolonged body contact; Why descendents of eastern European Jews have higher rates of breast cancer; More discussion about PSA and other screening tests; Supplements to combat knee arthritis; B vitamin complex, zinc and biotin can help fragile fingernails; Standard work-up after a fainting incident; The type of bacteria in your gut can influence what you like to eat! Active athletes have higher quantity and variety of gut bacteria; Women using a hormone blocker should avoid light during sleep