One thousand men's urine is another scientist's latest discovery.

"Very broadly speaking, the southern Chinese are the healthiest and the people in southern Texas are least healthy."

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Thousands of frozen urine samples have yielded new information about the diversity of human metabolism across the globe — about who eats what, and how their unique internal microorganisms handle the input.

‘Genome-wide association studies’ can link specific gene variants with diseases and predictors of disease, such as blood pressure and weight.

Here's how metabolism varies between populations