Some new studies came out the last few days that Dr. Martin says are quite interesting. Two of the studies are on probiotics. Researchers are realizing more and more the importance of the microbiome. One of the studies looks at the role of probiotics in colorectal cancer. Your gut is made of billions and billions of bacteria – 3 to 5 pounds worth – and they’re seeing how antibiotics can destroy your microbiome, opening the door to disease. The other study is reporting that a test of insulin sensitivity or insulin resistance, done once, can predict the risk of major heart disease over the next 22 years. Dr. Martin shares why the A1C test, glycated hemoglobin, is one of the most preventative tests that you can get.