Medical research

X chromosomes linked to male infertility identified

An international team of researchers has identified multiple X chromosomes that likely contribute to infertility in men. In their paper published in The American Journal of Human Genetics, the researchers describe how they ...

Medications

Explaining how Ritalin sharpens attention

Even half a century after a drug comes on the market, scientists can still learn new things about how it works. New research from University of Pittsburgh neuroscientists provides a rare look at how Ritalin affects activity ...

Medical research

Genes can affect our nutrient tolerance

Carbohydrates, proteins and fats are essential nutrients to all animals. Yet dietary variation between species, populations and individuals can vary dramatically.

Genetics

The surprising twist behind a rare neurological disorder

A fruit fly study, by an international group of researchers, has pinpointed how a genetic mutation causes one of the important molecular machines in our cells to malfunction. The findings provide a biological mechanism behind ...

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