A new study in the University Hospital of Essen, Germany, suggests that acupuncture transforms the way the brain processes pain.

Using MRI, researchers led by Dr. Nina Theysohn could observe brain areas that normally deal with perception and response to pain.

We studied 18 healthy volunteers who received electronic stimulation painful left ankle, the radiologists found that when acupuncture needles are placed on the right side of the body of individuals, the activation of pain processing areas in the brain was reduced substantially.

“This is just one of the studies confirming that acupuncture helps with chronic pain,” said Dr. Daniel Hsu at AOL Health.

Hsu says that acupuncture works in two ways. Stimulates the body to produce chemicals that act as natural painkillers, and interfering with pain signals sent to the brain.

“When you have chronic pain, this is a good way to defend themselves,” he added in acupuncture and herbal medicine. “With nonsteroidal anti-inflammatory drugs have to take more and more to ensure its continued operation.” He explained that this type of medication can shrink blood vessels and can damage the liver when used consistently.

“When you get acupuncture not only reduces pain, but that increases blood flow,” explains Hsu. “And there are very few side effects, anyone can try this method.”

The Chinese believe that good health depends on the proper flow of a vital energy called qi (chee) that moves through our bodies along invisible meridians, or pathways.

Inserting needles into particular points along these meridians, they say, can tweak this life force into proper balance. Western researchers have their own theories: One is that acupuncture triggers the release of endorphins, the body’s natural painkillers.

This idea hasn’t been proven, but a number of studies show that acupuncture does bring about real physiological changes, sometimes far from the point where needles are inserted.

In one study, for example, researchers at the University of Pennsylvania Medical Center used advanced imaging equipment to view the brains of nine patients — four pain sufferers and five healthy people — while they underwent acupuncture.

In every case, the researchers saw blood flow increase in the thalamus, a kind of relay station for pain messages in the brain, along with other changes in the brain stem and cortex.

How safe is it?

It’s very safe, as long as your acupuncturist uses either sterilized or disposable needles to prevent the spread of infection. One possible risk is bruising where the needles were inserted; the bruises are usually small and go away within a few days.

Aspirin and other pain relievers can make bruising worse, though, so be sure to let your acupuncturist know if you’re taking any.

It’s also a good idea to let your doctor know what you’re up to, so he or she can coordinate your acupuncture with the rest of your medical care. Your doctor will also want to rule out life-threatening conditions such as cancer, heart disease, and acute infections.

Your acupuncturist will probably get things started by asking a lot of questions about your personal and family medical history; recent events that might have contributed to your illness; and how you’re responding to various stimuli, such as heat and cold.

During the treatment itself, you’ll sit or lie on a padded table while he or she inserts very fine sterile needles into your skin.

You might feel a small pinprick sensation when the needle is first inserted; once it’s in, you may experience numbness or a tingling sensation that goes away after a few seconds.

Your acupuncturist might also manipulate the needles, apply light electricity to them, or heat them.

Depending on your response and your health problem, you might need just one session or many sessions. Keep in mind, too, that most acupuncturists see needle therapy as just one part of treatment; yours might also suggest herbs, vitamin or mineral supplements, and changes in diet and exercise.

If your acupuncturist recommends an herbal remedy, be sure to mention any other drugs or herbs you’re taking to avoid potentially harmful interactions.

Note, too, that because the government doesn’t regulate herbal products, it’s hard to know exactly what you’re getting (in rare cases, products may be contaminated with undesirable substances).

Also, remember that the NIH evaluation of acupuncture looked only at the effectiveness of needles — not dietary supplements and herbs.

The 5,000-year-old Chinese art of acupuncture involves the stimulation of specific points on the body by a variety of techniques-usually hair-thin metallic needles-to treat or prevent illness.

In 1997, after looking at thousands of studies and interviewing leading researchers, a panel of experts convened by the National Institutes of Health concluded that acupuncture is an effective treatment for nausea and vomiting caused by chemotherapy, surgery in adults and post-operative dental pain.

Getting needled, the panel said, can also be helpful in combination with other therapies in the treatment of addictions, stroke rehabilitation, headaches, menstrual cramps, tennis elbow, fibromyalgia, myofascial pain, osteoarthritis, low-back pain, carpal tunnel syndrome, and asthma.

A landmark study published in 2004 found that acupuncture provides pain relief and improves function for people with osteoarthritis of the knee. And more recent research suggests it may help treat post-traumatic stress disorder and infertility.