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# Sauna-Induced Acceleration In Insulin Absorption From Subcutaneous Injection Site

Veikko A. Koivisto
The British Medical Journal
Vol. 280, No. 6229 (Jun. 14, 1980), pp. 1411-1413
Stable URL: http://www.jstor.org/stable/25440133
Page Count: 3
The effect of the Finnish sauna on insulin absorption from a subcutaneous injection site was examined in eight insulin-dependent diabetic patients by measuring externally the disappearance rate of ${}^{125}{\rm I}\text{-labelled}$ rapid-acting insulin. The sauna (twice for 25 minutes at 85°C) accelerated insulin absorption by 110% as compared with room temperature (p <0·01). After the sauna blood glucose concentrations were 3·0-3·3 mmol/l (54·1-59·5 mg/100 ml) lower than on the control day (p <0·05). The fall in blood glucose values was proportional to the increased rate of insulin absorption (r=0·80; p <0·01). The hypogiycaemic effect of a sauna in insulin-treated diabetics is clearly at least partly due to enhanced insulin absorption from the injection site. Such an effect might be prevented by taking a snack or reducing the insulin dose.