News / Health

    Herbal Medicines Linked to Kidney Disease

    Natural remedies from a family of herbs called Aristolochia have been linked to kidney disease and cancer, according to British researchers. (Photo by Carsten Niehaus)
    Natural remedies from a family of herbs called Aristolochia have been linked to kidney disease and cancer, according to British researchers. (Photo by Carsten Niehaus)
    Art Chimes
    Scientists in Britain have pulled together previous studies about an ingredient in some herbal medicines that can cause severe kidney disease and cancer.

    The research is a wake-up call to users of some traditional remedies and to governments that could regulate use of the herbs.

    In the early 1990s, an epidemic of kidney disease broke out in Belgium among young women who had been treated with Chinese herbal medicines at a weight-loss clinic. The herbs come from a family called Aristolochia. They are used to treat skin conditions, joint pain and other symptoms.

    Graham Lord of Kings College London says the ailment was traced to aristolochic acid, an ingredient in some of the herbs.

    “It binds to DNA and causes kidney disease," Lord says. "It causes cancer in areas where it’s most concentrated, which probably explains why the cancers are mostly focused around the urinary tract and the kidney.”

    Lord is the lead author of a new paper describing the kidney disease, now known as aristolochic acid neuropathy (AAN), and suggesting standardized diagnosis and treatment protocols.

    Herbs containing aristolochic acid are banned from Europe and the United States, and the resulting form of kidney disease is now mostly found elsewhere.

    “Import bans, working with the herbal practitioners that in the past have used this drug, can be extraordinarily effective,” Lord says.

    In places where use of these herbs is common, cases of AAN persist.

    “In Chinese Taiwan, there’s epidemiological surveys suggesting that tens if not hundreds of thousands of people have been exposed to this particular herb,” says Lord, who acknowledges it’s hard to know how many people are actually getting kidney disease from these herbs. A definitive diagnosis requires advanced testing to differentiate from other kinds of kidney disease.

    In his review of two decades of published medical literature, Lord found reports of the disease in Europe, North America and Asia. But nothing in other areas of the world where herbal medicines are widely used.

    “That’s probably because we’ve not looked in a systematic manner," he says. "It would surprise me if there wasn’t an incidence of this disease in Africa and in South America as well.”

    Treatment of AAN usually requires dialysis or even kidney transplant. Lord says it’s important to identify kidney disease caused by aristolochic acid, so doctors can monitor the patient for cancer, which is more likely than with other causes of kidney failure.

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    Comment Sorting
    Comments
         
    by: vivekdhungav from: mumbai
    April 02, 2013 1:17 PM
    Do whatever you can do to get cure kidney disease because I believe you cannot enjoy your life having such severe

    disease.If you are really interested in curing it read this book on site http://www.thebooksworld.com/the-kidney-disease-

    solution/

    Regards,
    Vivek Dhungav.

    by: John Simms from: Louisville, KY.
    March 21, 2013 11:03 AM
    When herbs have drug like qualities they can cause drug like diseases. All the more reason to avoid them.

    by: Alex Newell from: Bedford
    March 20, 2013 3:02 PM
    This is a rather sketchy and shallow article and functions only to alarm people. The herb in question is rare and not used except for a small number of Chinese Herbalists and there is no comparison as noted by a commenter here of the much higher toxicity of so many well known drugs at every local Pharmacy

    by: Andrew from: UK
    March 20, 2013 5:42 AM
    We have just learned today that statins, prescribed by doctors, are causing kidney damage.

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