Sad In The Spring? Allergy-mood Link Is Real.

Seasonal allergies affect me and my 36 million American friends, now many doctors agree there is a real connection between allergies and your mood. An allergic reaction is an immune response that releases protein molecules used to communicate between cells. When they signal the brain, they induce the feelings of sickness, or being "mentally drained," that often accompany the flu. This molecule release isn't as powerful in allergies, but it's still present. Learn more.