Microorganism

What is the human microbiome? 

What physiological systems can alterations in the microbiome affect? 

What can change our microbiomes for the better or worse?

What would an excess of Firmecutes compared to Bacteriodetes in the gut microbiome mean for an individual?

Pick a section of the review article and describe the research demonstrating the impact of the microbiome on a specific aspect of human health.