If springtime's splendor leaves you sniffling, "good" bacteria may one day provide relief. New research suggests probiotics can alter the body's immune response to grass pollen — a common cause of seasonal allergic rhinitis, or hay fever. The landmark study published in Clinical and Experimental Allergy suggests that in the future, "good" bacteria, or probiotics, may potentially offer a treatment option to the estimated 35.9 million people in the U.S. who have seasonal hay fever.

Full story: medicinenet.com