Negotiating medical service rates with insurance companies; New research explains chronic lyme disease after the infection has cleared; A serious case of SIBO -- natural supplements can help; Drug-resistant fungi in the gut is difficult, leading to lymphocytic colitis in this case; How weight training changes the brain in a mouse study; Antibiotics for 5 to 7 days is adequate to treat pneumonia; Rebuilding the microbiome after antibiotics for dental work; Candida auris and mosquito-borne viruses increase because of global warming; Strange sounds at the American Embassy in Cuba had brain effects as measured by MRI