The Human Microbiome Project, an interdisciplinary research effort at the National Institutes of Health (NIH), aims to characterize the microbial communities found at several different sites on the human body. Per Dr Collins, Director NIH, "In addition to our genes, lifestyles, and experiences, our microbiomes are a part of what makes each of us unique. They may also help to explain why some people are more prone to certain illnesses than others." A recent report in Nature provides more details about characterizations of microbiome personalization. Read more about their findings at the NIH Director's Blog.