Smog's Health Effects Persist for Decades, Study Finds

Exposure to air pollution can increase risk of death from heart or lung disease for more than 30 years

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Allergy Shots Still Effective for Seniors

Researchers say aging immune system doesn't significantly reduce injections' usefulness

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Pregnant Women Benefit From Tamiflu at First Sign of Flu: Study

During pregnancy, risk of serious complications and death from the illness intensifies

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VA Hospital Care Improving, Study Suggests

Death rates for three major conditions are similar to non-VA medical centers

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Study Ties School Calendar to Asthma Flare-Ups

After summer or long break, symptoms spike when kids return to the classroom

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