A very recent study at Oregon State University demonstrated that diets that are high in either fat, sugar or both seem to cause dramatic changes to the bacteria that live in our gut. This complex mixture of about 100 trillion microbes that live in our digestive system is called our ‘microbiome’. Researchers are now beginning to acknowledge a phenomenon that complementary medical practitioners have long understood – that there is a deep connection between the health of our gut and microbiome and our cognitive abilities. The shocking news is that these changes have a deleterious impact upon our intelligence leading to a loss of “cognitive flexibility,” or the power to adapt and adjust to changing situations. In the study this effect was most serious in those on the high-sugar diet, which also showed an impairment of early learning for both long-term and short-term memory. The negative impact that elevated blood sugar makes upon our cognitive function is so marked that some researchers now consider Alzheimer’s Disease to be “Type 3 diabetes”.