We examined the mean blood preasure levels (MBPL) and prevalence rates of hypertension by sex and age in the people of Okinawa. The number of subjects studies was 16.759. Of which 6.352 were male and 10.407 were female over 10 years old. We estimated the volume of salt intake per person per day. We found that MBPL and pevalence rates of hypertension were significantly lower in Okinawan people than in mainland Japanese people. The main cause of a lower MBPL and lower prevalence rates of hypertension in Okinawan people results from the warm climate of the subtropical zone and a low salt intake (9.6 g). This may influence the low prevalence rates of ischemic heart disease and cerebrovascular disease in Okinawa, diseases which are number two and three respectively among the three main causes of death in Japan.
As obesity is the most prevalent, chronic risk in aged population, a much more accurate method is needed in order to assess obesity which is not satisfied by current methods and machines. As to those background, A-mode type Ultrasonic Device is able to assess directly subcutaneous fat thickness and also to estimate more exactly mass of body fat so that it will be able to test etiological relationship between fat mass and diseases. Authors studied the subcutaneous fat thickness of clients who had medical data of health examination respectively at three districts which were Hase village of Nagano, Nerima and Kashiwa of metropolitan area, and analyzed statistically the relationship between subcutaneous fat thickness and data of medical examination. The results are following: 1. Subcutaneous fat layers were thinner in Hase of rural mountainous area than in both metropolitan subjects of the urban area, even though there were not any different value of Body Mass Index (BMI) among them. 2. After measuring four abdominal location of suprailiac, three abdominal location of supra-, mid- and infra-rectum abdominal, it was more clear that males were more thick than females in supra-rectum abdominal area, and adversely females were more thick than males in infra-rectum abdominal area. 3. When subjects of all were divided into five degrees according to the levels of T-cholesterol, triglyceride and HDL-cholesterol, by Hata's classification of hyperlipidemia, subcutaneous fat thickness increases in accordance with severity of hyperlipidemia. This relationships were most typical in the level of trigryceride. 4. According to the occupational activities, the harder workers got the thinner subcutaneous fat thickenss especially in male.
The factors influencing serum total cholesterol (TC) and HDL-cholesterol (HDL-C) levels, atherogenic index (AI) and frequency of complaints (heavy head, numbness in limbs and dizziness) were analyzed. The relationships between the complaints and AI levels were further investigated. Subjects were 1, 283 adults (512 males and 771 females), aged from 40 to 79, in a mass health examination conducted in a town of Kumamoto Prefecture in 1988. The results were as follows: 1. The frequency of complaints of heavy head and dizziness in females was significantly higher than in males. The number of complaints of numbness of both sexes increased noticably with age. 2. AI levels for females tended to increase with age, reflecting the changes of TC and HDL-C levels. 3. TC and AI levels in obese group for both sexes were significantly higher than in non-obese group. On the other hand, the HDL-C levels in the former group were significantly lower than in the latter. The HDL-C levels for male drinkers were significantly higher than non-drinkers. 4. Complaints of heavy head and numbness in limbs tended to increase among females as the AI levels became higher. 5. AI levels in the female group with complaints of heavy head, numbness in limbs in whole ages were significantly higher than in those without either complaint. The results suggest that atherosclerosis may exist in the backgrounds of those complaining of heavy head and numbness in limbs.
The aim of this study is finding ways to control the nursing students in their daily diet. The subjects are 94 healthy nursing students. We examined the relation between the food frequency and blood characteristics (blood specific garavity, hemoglobin contents and serum iron levels) on the basis of the results of the investigation. The results are as follows: 1) There were statistically significant correlation between serum iron levels and the total number of the food frequency of the successive three days of legumes, algae, light vegetables, convenience foods and fruits. 2) A few of nursing students answered that they cared for food balance and volume of eating in their daily diet, and their serum iron levels were higher than the others, but their hemoglobin contents were lower than the nursing students who answered that they didn't care for food balance and volume of eating in their daily diet. 3) In the nursing students who were constipated and often defecated, their serum iron levels were lower than the other students.