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Klinefelter syndrome is the most common disorder of the male sex chromosomes, yet is rarely diagnosed in children. A new assessment tool is being developed by researchers at Columbia to help pediatricians detect the physical traits of the syndrome.

A diet high in refined carbohydrates may increase risks for not just obesity and diabetes, but also depression, according to a study by Columbia psychiatry researchers.

Some 100 million people in southeast Asia drink from shallow wells originally drilled to provide germ-free water, but many are contaminated with arsenic. Columbia researchers, including Mailman School scientists, are working to combat the issue.