lead author Matthew During of Ohio State University, described what happened after just three weeks, "And what was surprising to us was that the animals in the enriched environment, the cancers are 40 percent smaller" "When we moved that enrichment to six weeks,now, the cancers were approximately a dramatic effect,and not only that, but 17 percent of those animals had no tumors whatsoever."

VOA: standard.2010.07.14