Humulus lupulus
Hops are the pale
green, cone-like fruits of a hardy, twining vine native to Europe,
western Asia, and North America. They are probably best known by
brewers—and beer drinkers—for giving aroma and flavor to beer.
Interestingly enough, hops were originally added to beer for their
natural preservative properties. Only later did they come to be valued
for the bitter, but agreeable, taste they impart to the drink. The
Romans ate the young shoots of the hops plant as if it were asparagus, a
practice that continued in rural parts of the British Isles well into
the 20th century. Roman physician Pliny the Elder named hops Lupus salictarius,
which means “willow wolf” and refers to the vine’s habit of twining
around other plants and strangling them, like a wolf does to sheep. The
plant’s species name, lupulus, is Latin for “small wolf,” a
similar reference. Hops were used medicinally in Europe and by Native
Americans in North America. Today, their greatest value in herbal
medicine is as a calming, natural sedative.
Therapeutic Uses
Digestion
Nervousness
Insomnia
Menopause
Though most famous as an ingredient vital to brewing
beer, hops have been used to improve appetite and digestion, to relieve
toothache and nerve pain, and to treat insomnia around the world. It is
said that Abraham Lincoln relied upon hops pillows to relax and to improve his sleep.
Today, Germany’s health authorities continue to
approve the use of hops for “discomfort due to restlessness or anxiety
and sleep disturbances.” Most of the scientific research evaluating the
effectiveness of hops for anxiety and sleep has been conducted with a
combination of hops and valerian, another popular sedative herb. Three
controlled studies have shown that this combination is more effective
than placebo and similar in effectiveness to benzodiazepines (sleep medications)
for shortening the time it takes to fall asleep and for improving sleep
quality. None of the studies reported excessive morning sleepiness or
rebound insomnia when the participants stopped taking the herbs.
One area that is garnering attention is the potential
use of hops for the relief of menopausal symptoms. Researchers have
identified at least one key compound in hops, 8-prenylnaringenin, that
is linked to significant hormonal activity. A 6-week study in menopausal
women found that a standardized hops extract reduced hot flashes, night
sweats, and insomnia. Another study found that a topically applied gel
containing hyaluronic acid, vitamin E, and hops extract significantly
improved vaginal dryness in postmenopausal women. Hops might prove to be
an attractive alternative to conventional hormone therapy, but more
research is needed to determine long-term safety.
How to Use
Tea: Steep 1 teaspoon hops strobiles
(female flowers) in 1 cup water for 5 to 7 minutes. Add honey to taste.
Drink 30 minutes before bed.
Capsules: 500 mg, 1 to 3 times daily; often taken in combination with valerian root.
Tincture: 2 ml tincture, 1 to 3 times daily.
Precautions
Given the potential for increased hormonal activity
stimulated by hops, women who have had breast cancer or who are at risk
for it should avoid hops until more is known. Safety in pregnancy is
not known. Hops may have sedative effects, so driving or operating heavy
machinery should not be attempted while using hops.
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