Mr. MARK BLUMENTHAL (Publisher, Pollster.com): It's the change in the middle, the movement among independents, that's as much as responsible for this modest but critically important shift to McCain.

NPR: Candidates Vie For Female Voters' Attention

"There is a significant body of scientific and clinical evidence supporting the safety and efficacy of ginkgo extract for both cognitive function and improved circulation, " said Mark Blumenthal, executive director of the American Botanical Council.

CNN: Five ways to keep Alzheimer's away

The shift toward synthetic chemical medicines occurred in the 20th Century, but according to Mark Blumenthal, the founder and executive director of the American Botanical Council, there is renewed interest in the medicinal benefits of natural foods - including those found in the pills.

BBC: Plants found in ancient pills offer medicinal insight