Saunas and atherosclerosis
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Jpn Heart J. 2004 Mar;45(2):297-303. Repeated sauna therapy reduces urinary 8-epi-prostaglandin F(2alpha). Masuda A, Miyata M, Kihara T, Minagoe S, Tei C. Department of Cardiology, Respiratory and Metabolic Medicine, Kagoshima University, Kagoshima, Japan.
We have reported that repeated sauna therapy improves impaired vascular endothelial function in a patient with coronary risk factors.
We hypothesized that sauna therapy decreases urinary 8-epi-prostaglandin F(2alpha) (PGF(2alpha)) levels as a marker of oxidative stress and conducted a randomized, controlled study.
Twenty-eight patients with at least one coronary risk factor were divided into a sauna group (n = 14) and non-sauna group (n = 14).
Sauna therapy was performed with a 60 degrees C far infrared-ray dry sauna for 15 minutes and then bed rest with a blanket for 30 minutes once a day for two weeks.
Systolic blood pressure and increased urinary 8-epi-PGF(2alpha) levels in the sauna group were significantly lower than those in the non-sauna group at two weeks after admission (110 +/- 15 mmHg vs 122 +/- 13 mmHg, P < 0.05, 230 +/- 67 pg/mg x creatinine vs 380 +/- 101 pg/mg x creatinine, P < 0.0001, respectively).
These results suggest that repeated sauna therapy may protect against oxidative stress, which leads to the prevention of atherosclerosis.
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Heart failure and coronary heart disease