Surfing used to do that for me. Hey, being in high school was stressful! Stress put me out there in the water, and I did it as often as I could to de-stress. Who knows if it was the ocean shoreline or this sun baking away on my skin? All I knew was that it worked every time!
As more research is done on natural products, and as their efficacy is continued to be proven, medical companies continue to try to get in on the movement towards more "natural" approaches to healing. It may be long overdue, but this trend comes with its share of problems.
A year ago in a town in Michigan, a story was was published about a fungus that was attacking maple trees. The fungus wouldn't kill the trees, just attack the leaves. The leaves would start by becoming off color, then develop black spots. Many of the leaves would fall; the leaves that were left would simply turn brown.