National Center for Complementary and Integrative Health (NCCIH)
NIH…Turning Discovery Into Health

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Health Topics A-Z

Research Results by Date

Research spotlights of selected studies are shown below. For a full list of published NCCIH Research to-date, see PubMed.

Spotlights for 2009

The dietary supplement Ginkgo biloba was found to be ineffective in lessening cognitive decline in older people, according to a study published in the Journal of the American Medical Association. (December 2009)
A woman meditates in an open field of flowers.
A study found that Transcendental Meditation helped college students decrease psychological distress and increase coping ability, and that these changes were associated with decreases in blood pressure. (December 2009)
Kelp forest.
In laboratory experiments, palmitic acid from seaweed blocked HIV‑1 infection. (December 2009)
Black Cohosh © Steven Foster
Results from research involving 89 women suggest that black cohosh and red clover are no better than placebo in treating common symptoms of menopause. (November 2009)
A tai chi class.
Researchers conducted a long-term, randomized, controlled trial comparing tai chi and conventional exercise in a group of 40 adults (mean age 65) with symptomatic knee osteoarthritis. (November 2009)
Herbalist weighing dried herbs.
In China and other Asian countries, Chinese herbal medicines have long been used to prevent or delay the onset of diabetes. (October 2009)
Tea pot with two cups on a tray.
Researchers interested in potential cholesterol-lowering mechanisms of tea tested the effects of green tea and black tea extracts on cholesterol synthesis in liver cells from rats. (October 2009)
Acupuncture performed on a person's back.
Although acupuncture has long been used to treat pain, the underlying cellular and molecular mechanisms are not fully understood. (September 2009)
A woman practices a meditative yoga pose.
Previous research suggests that yoga, a popular complementary health practice, may be beneficial for people with chronic low-back pain. (September 2009)
Chamomile © Steven Foster
Findings from a placebo-controlled clinical trial in 57 patients suggest that chamomile may have modest benefits for some people with mild to moderate generalized anxiety disorder. (August 2009)