St. John's wort , also known as goatweed and hypericum, is a perennial plant native to Northern Europe and Great Britain. This plant secretes red oil when its leaves or stems are pinched, and was named St. John's wort by early Christians, who thought it oozed its signature red oil on the anniversary of St. John's beheading. Both ancient Romans and early Christians believed that this herb protected against evil, and in medieval times it was used it to treat insanity believed to be caused by … [Read more...]