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St. John’s Wort (Hypericum perforatum)
The sunny yellow flowers of St. John’s wort (SJW) harbor a strange secret. Bruise the delicate petals and they seem to bleed. The blood-red liquid is an oil released from tiny, dark-colored glands scattered along the petal margins. In ancient times, a plant that “bled” was assumed to possess great powers.
During the rise of Christianity, the herb came to be associated with John the Baptist (wort is the Old English word for plant). It was said to bloom on the saint’s birthday, June 24, and to bleed on August 29, the anniversary of his beheading. The earliest use of the name may date to the sixth century, when the Irish missionary St. Columba carried the herb with him into northern Scotland. The genus name, Hypericum, is from the Greek, meaning “over a picture or icon”—a reference to the custom of draping the herb over religious images to strengthen their powers in banishing demons. For many centuries, St. John’s wort was a symbol of protection against evil, but also a prized medicinal herb, with the power to heal the body and ease the troubled mind.
Ancient Greek and Roman physicians used St. John’s wort to dress battle wounds, as well as treat burns, bruises, and inflammations. Hundreds of years later, as battles raged in the Holy Land, the crusaders treated their wounds with St. John’s wort in much the same way. Throughout the Middle Ages, heart conditions, jaundice, dysentery, bleeding, urinary troubles, and nervous depression were all treated with the herb. Also popular at this time, and for centuries afterward, was hypericum oil, a preparation made from the flowers and rubbed into the skin to heal bruises and wounds. By the late 17th century, St. John’s wort had been incorporated into American herbal medicine, prescribed externally for wounds and sores and internally for nervous anxiety and depression.
After falling into disuse early in the last century, St. John’s wort has seen a remarkable revival in the past few decades. It is currently the most widely used herb in modern herbal medicine for treating mild to moderate depression. St. John’s wort is also used to relieve anxiety, ner- vous exhaustion, seasonal affective disorder, premenstrual syndrome, and to help heal minor wounds and skin irritations.
著者について
TIERAONA LOW DOG, M.D., is an internationally recognized expert in the fields of integrative medicine, dietary supplements, herbal medicine and women's health. Dr. Low Dog has been an invited speaker to more than 550 scientific conferences, has published 45 peer-reviewed articles, written 22 chapters for medical textbooks, and published five books including National Geographic's Life is Your Best Medicine and Healthy at Home. She is a frequent guest on the Dr. Oz show and NPR's The People's Pharmacy. She currently serves as the Fellowship Director for the Academy of Integrative Health and Medicine where she leads the nation's first inter-professional graduate level training program in integrative medicine. She is the author of National Geographic's Fortify Your Life, Healthy at Home and Life Is Your Best Medicine.
