Immunology

Better vaccines are in our blood

Red blood cells do more than shuttle oxygen from our lungs to our organs: they also help the body fight off infections by capturing pathogens on their surfaces, neutralizing them, and presenting them to immune cells in the ...

Medical research

Fasting ramps up human metabolism, study shows

Fasting may help people lose weight, but new research suggests going without food may also boost human metabolic activity, generate antioxidants, and help reverse some effects of aging. Scientists at the Okinawa Institute ...

Medical research

'Vampires' may have been real people with this blood disorder

Porphyrias, a group of eight known blood disorders, affect the body's molecular machinery for making heme, which is a component of the oxygen-transporting protein, hemoglobin. When heme binds with iron, it gives blood its ...

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