Too Little Vitamin D May Worsen Asthma
Low levels may also hinder response to steroid treatment, study finds
Even Mild Lung Disease Affects the Heart
Reduced blood supply is probable cause, expert says
Asian Air May Be Worsening Ozone Over U.S.
Experts say springtime levels a few miles up are on the rise
Shots Relieve Children's Hay Fever, Cut Expenses
Health-care costs drop by one-third, study finds
Leading COPD Drug Won't Harm Heart: FDA
Initial concerns over Spiriva HandiHaler may be unfounded, agency says
Short School Closures Won't Shut Down Flu
Two-week shutdowns won't work, simulations suggest
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