Updated November 25,
2014.
What is Magnetic Therapy?
Magnetic therapy is based on the theory that when
delivered directly to the body magnetic fields can stimulate healing from a
range of health problems. Although its health claims include the treatment of
multiple sclerosis, fibromyalgia,
arthritis, insomnia, inflammation,
and even cancer and heart disease, there is little scientific evidence for
magnetic therapy's effectiveness.
How
Does Magnetic Therapy Work?
Magnet therapy
takes many different forms. In some cases, magnets are applied to
illness-affected areas with the help of wraps, shoe inserts, self-adhesive
strips, belts, or "magnetic jewelry" like bracelets, necklaces, and
earrings. Other products include magnetic mattress pads and blankets, as well
as magnetic-field-generating machines and even magnet-conditioned water.
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Since scientific
support for its use is so limited, it's difficult to determine how magnetic
therapy might promote healing. However, proponents maintain that magnets can
stimulate circulation, relax the blood vessels, increase endorphin levels,
reduce muscle tension, and normalize metabolic functioning.
Magnetic
Therapy Research
Even though
claims that magnetic therapy can treat diseases like cancer and multiple
sclerosis are unfounded, there is some evidence that it may help relieve pain
related to these chronic conditions:
1) Arthritis
In a 2004
study of 194 adults with osteoarthritis of the hip or knee, researchers found
that those who wore magnetic bracelets for 12 weeks had a decrease in
arthritis-associated pain. Meanwhile, a 2001 study of 64 people with rheumatoid
arthritis of the knee showed that 68% of those who used magnetic therapy
reported feeling better or much better after one week.
2) Chronic Pelvic Pain
For a 2002
study of 32 women with chronic pelvic pain, one group of patients had active or
placebo magnets applied to their abdomens for 24 hours a day. After four weeks
of continuous use, those who received the active magnets reported significantly
lower pain levels than at the start of the study.
3) Fibromyalgia
After six
weeks of sleeping on magnetized mattress pads, 13 women with fibromyalgia
reported significantly less pain, sleep disturbance, fatigue, and next-day
tiredness. A control group of 12 women (who slept on non-magnetized mattresses)
had smaller improvements in pain, sleep, fatigue, and tiredness. The study's
authors note that improvements in both groups might have been due to use of a
better mattress pad.
More
Science on Magnetic Therapy
There is also evidence that magnetic therapy may help
reduce neck pain, post-polio pain, and diabetic foot pain. But in studies on
the use of magnetic therapy for relief of chronic low back pain and
wrist pain related to carpal tunnel
syndrome, researchers found magnets no more effective than placebo
treatments.
Magnetic
therapy may show promise in the treatment of female urinary continence,
however: In a 2004 study of 24 patients, 58% of participants showed improvement
after eight weeks of receiving twice-weekly magnetic stimulation of the pelvic
floor.
Caveats
If you're
undergoing radiology, it's important to avoid the use of magnetic devices.
Pregnant women and people with cardiac pacemakers should also forego magnetic
therapy.
In addition,
it's important to consult your doctor about the condition you're seeking to
alleviate through magnetic therapy and to discuss the potential risks and
benefits of magnetic therapy. Self-treating and avoiding or delaying
standard care can have serious consequences.
Sources:
Brown CS, Ling FW, Wan JY, Pilla AA. "Efficacy of
static magnetic field therapy in chronic pelvic pain: a double-blind pilot
study." American Journal of Obstetrics and Gynecology 2002 187(6):1581-7.
Chandi DD, Groenendijk PM, Venema PL. "Functional
extracorporeal magnetic stimulation as a treatment for female urinary
incontinence: 'the chair'." BJU International 2004;93(4):539-42.
Colbert AP, et al. "Magnetic mattress pad use in
patients with fibromyalgia: a randomized double-blind pilot study."
Journal of Back and Musculoskeletal Rehabilitation 1999;13:19-31.
Segal NA, Toda Y, Huston J, Saeki Y, Shimizu M, Fuchs
H, Shimaoka Y, Holcomb R, McLean MJ. "Two configurations of static magnetic
fields for treating rheumatoid arthritis of the knee: a double-blind clinical
trial." Archives of Physical Medicine and Rehabilitation 2001
82(10):1453-60.
Tim Harlow, Colin Greaves, Adrian White, Liz Brown,
Anna Hart, Edzard Ernst. "Randomised controlled trial of magnetic
bracelets for relieving pain in osteoarthritis of the hip and knee."
British Medical Journal 2004;329:1450-1454.
Disclaimer: The information contained on this site is
intended for educational purposes only and is not a substitute for advice,
diagnosis or treatment by a licensed physician. It is not meant to cover all
possible precautions, drug interactions, circumstances or adverse effects. You
should seek prompt medical care for any health issues and consult your doctor
before using alternative medicine or making a change to your regimen.
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