Some people have questioned the evidence behind hydrotherapy, especially the cold water treatments that are described in the book that Alexa Fleckenstein and I co-authored. German research supports the effects of cold water used on the skin as therapy. Unfortunately, the studies are in German, and they are small. (1) Because Pharma firms have no interest in inexpensive water cures, there probably won’t be big studies any time soon. Fact is, the German insurance system pays all or part of physician-prescribed treatments, including hydrotherapy and herbs. The importance and therapeutic potential of water, and especially cold water, are now simply taken for granted in Germany.(2) Here are some specific research studies supporting the health benefits of cold water treatments. Citations are listed at the end. (More cold water research details in Own Your Health (2003)
Boosting the immune system
A pilot study of immune effects from cold water therapy with a small number of breast cancer patients found significantly increased disease-fighting cell counts in every category examined, including neutrophils, lymphocytes, monocytes.(3)
Reducing the perception of pain
In a study in Japan, cooling by ice water was one of the “competitive stimuli” that reduced the perception of the pain of a laser beam on the skin. (4)
Improved circulation and function in the legs
A Swedish group administered three weeks of alternating cold and hot hydrotherapy to the legs of patients suffering from intermittent claudication (reduced blood flow) and found that improved systolic blood pressure in ankles and toes, reduced pain, and markedly better walking ability went beyond the results of standard treatment and persisted for at least a year after treatment.(5)
Swimming in the winter?
Ten healthy subjects who regularly swim during the winter were evaluated at Berlin’s Institute of Biochemistry at Humboldt University Medical School. Their blood and urine showed increased levels of anti-oxidants, which prevent cell damage, indicating their bodies’ increased tolerance to stress.(6)
(1)Summarized in Bühring, M., Naturheilkunde: Grundlagen, Anwendungen, Ziele (Natural Medicine: Basic Application and Goals), Munich, Verlag CH Beck, 1997.
(2)Haas, S.S., Hydrotherapy and more: Adapting Kneipp’s Natural Medicine to the U.S., Complementary Medicine for the Physician, 2000; 5(8):57,61-64.
(3)Kuehn, G., Sequential hydrotherapy improves the immune response of cancer patients. In: Mizrahi A, et al., (eds.) Potentiating Health and the Crisis of the Immune System: Integrative Approaches in the Prevention and Treatment of Modern Diseases. New York: Plenum, 1997.
(4)Kakigi R., et al. Pain relief by various kinds of interference stimulation applied to the peripheral skin in humans: pain-related brain potentials following CO2 laser stimulation. J peripher Nerv Syst 1996;1:189-198.
(5)Elmstahl, S. et al., Hydrotherapy of patients with intermittent cluadication: a novel approach to improve systolic ankle pressure and reduce symptoms. Int Angiol. 1995;14:389-394.
(6) Siems, W.G., et al., Uric acid and glutatione levels during short-term whole body cold exposure. Free Radic Biol Med. 1994;16:299-305.