Diseases, Conditions, Syndromes

Tackling chronic sinusitis by addressing underlying factors

The stuffy noses and sinus pressure of head colds are uncomfortable, but for most people, they go away within days. For those with chronic sinusitis, however, those symptoms and others drag on for weeks. Now scientists are ...

Medical research

Breathless: How blood-oxygen levels regulate air intake

Researchers have unraveled the elusive process by which small, highly vascular clusters of sensory cells in the carotid arteries "taste the blood," as a 1926 essay put it—the initial step in regulating blood-oxygen levels.

Health

Folic acid may help elderly weather heat waves

Supplemental folic acid can enhance blood vessel dilation in older adults, according to Penn State researchers, suggesting that folic acid supplements may be an inexpensive alternative for helping older adults to increase ...

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