Abstract

1) In the Aso-volcano district, a higher incidence of myocardial damage based on electrocardiographic studies was found in inhabitants of high fluoride communities than in “nonfluoride” villages.

2) In subjects with mottled teeth, greater myocardial damage was encountered electrocardiographically than in persons without mottling in the Asovolcano district.

3) The authors conclude that the myocardial damage observed in the inhabitants of the Aso-volcanic district is predominantly due to the excessive fluoride content of the drinking water.

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