Acupuncture curbs hot flashes in breast cancer survivors

Acupuncture may be a viable treatment for women experiencing hot flashes as a result of breast cancer therapies, new research has found. Hot flashes are brief episodes of flushing, sweating, racing heartbeat and sensations of heat. Precisely how hot flashes arise is not known, though they are closely associated with decreased levels of the primary female sex hormone estrogen.

"Though most people associate hot flashes with menopause, the episodes also affect many breast cancer survivors who have low estrogen levels and often undergo premature menopause, following treatment with chemotherapy or surgery," said lead author Jun Mao, associate professor at Perelman School of Medicine, University of Pennsylvania in the US.

"These latest results clearly show promise for managing hot flashes experienced by breast cancer survivors through the use of acupuncture," Mao noted. In the trial, the research team enrolled 120 breast cancer survivors, all of whom reported experiencing multiple hot flashes per day.

The researchers analysed how effectively an acupuncture technique known as electroacupuncture - in which embedded needles deliver weak electrical currents - reduces incidents of hot flashes as compared to the epilepsy drug gabapentin, which was previously shown to be effective in reducing hot flashes for these patients.

After an eight-week treatment period, the participants in the electroacupuncture group showed the greatest improvement in a standard measure of hot flash frequency and severity, known as the hot flash composite score (HFCS).

In addition to reporting the greatest reductions in hot flash frequency or severity, participants receiving acupuncture reported fewer side effects than those who took the pill. (The study was published in the Journal of Clinical Oncology.)

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