兵庫県一農村地区における高血圧発生率と食塩摂取傾向に関する疫学的研究

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  • An Epidemiological Study on the Relationship between Dietary Salt Intake and Incidence Rate of Hypertension in a Rural Area of Hyogo Prefecture
  • ヒョウゴケン イチノウソン チク ニ オケル コウケツアツ ハッセイリツ ト

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An epidemiological survey was made on the relationship between dietary salt intake and the incidence rate of hypertension with 295 women inhabitants of a rural area in Hyogo.<br>The results are as follows:<br>1) The incidence rate of hypertension in N area was 1.5 times as high as that in J area in all age groups.<br>2) Measured with Na/Creatinine ratio in urine used as the index of daily salt intake, the ratio value of N area was 1.5 times higher than that of J area. This result is very suggestive of the possible relationship between the amount of salt intake and the incidence rate of hypertension.<br>3) The median value of systolic blood pressure of the higher salt intake group whose Na/Cr ratio was over 300 showed a value of about 10mmHg higher than that of the lower salt intake group whose Na/Cr ratio was less than 300, in 30- and 40-year-old groups, but no difference was observed between them in the older age groups. It seems that the effect of excessive salt intake on blood pressure is observed at a relatively early age.

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