HIV & AIDS

Vitamin D status related to immune response to HIV-1

Vitamin D plays an important part in the human immune response and deficiency can leave individuals less able to fight infections like HIV-1. Now an international team of researchers has found that high-dose vitamin D supplementation ...

Health

Modern life may cause sun exposure, skin pigmentation mismatch

As people move more often and become more urbanized, skin color—an adaptation that took hundreds of thousands of years to develop in humans—may lose some of its evolutionary advantage, according to a Penn State anthropologist.

Medical research

Study finds linchpin of skin response to UVA light

Last year, a team of researchers at Brown University discovered that certain skin cells use a light-sensitive receptor found outside of the eye to sense ultraviolet light and quickly begin pumping out melanin to protect against ...

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