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St. John's wort (Hypericum perforatum) is indigenous
to California. Mature plant (left) is about 2 feet high; flowers (right)
are about 1/2 inch in diameter. |
hysicians treating depression today rely
heavily on antidepressant drugs. Although these drugs are somewhat successful
in alleviating depression, they are also associated with many side effects.
New research together with long-standing empirical evidence may prove herbs
to be viable alternatives for dealing with depression. Far safer than most
prescriptions drugs, easily available and much less expensive, herbs are
steadily growing in popularity.
Of all herbs, St. John's Wort is
a specific for depression and mental burnout. It also helps raise immune
response, which can be lowered by stress or depression. The antidepressive
effect of St. John's Wort is thought to be due to mono-amineoxidase inhibition.
The monoamine-oxidase enzyme converts amines such as catecholamines, serotonin,
adrenaline and dopamine in the brain into inactive forms, thus preventing
the excitability of nerves. St. John's Wort may also act on the cortical
system by inhibiting the cytokine interleukin-6 and other cyto-kines excreted
by cells of the immune system. Cytokines affect the nervous system both
directly and indirectly.
A long history
St. John's Wort is a
medicinal plant. It flowers at the time of the summer solstice and for centuries
the plant was thought to have the power to drive out evil spirits. With
the spread of Christianity, the plant was associated with St. John the Baptist.
It was said to bloom first on his birthday, June 21st, and to bleed on the
day in August when he was beheaded. Further, St. John's Wort was thought
to be most potent, medicinally, when harvested on St. John's Day.
The old English "wort"
means plant or root. Hypericum comes from the Greek meaning "above
an icon." Sprigs of the plant were set above images to clear the air
of evil spirits. Perforatum comes from the little holes or oil glands in
the leaves. The red color of the oil (hence the blood) is due to the hypericin
chemicals which have the pharmacological effects. St. John's Wort is a valuable
antidepressant.
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