Thinking of the ways in which microbes modulate diseases, we can being to craft a list of such diseases to better understand what microorganisms are and how they act within the human body. To start, micrograms play a role in cancer, diabetes, cardiovascular disease, respiratory disease, skin conditions such as eczema, obesity and likely many other other chronic diseases. Over the course of the next 10 weeks we will be exploring such avenues and the mechanisms behind it.