Improved Prevalence of Anemia and Nutritional Status among Japanese Elderly Participants in the National Health and Nutritional Survey Japan, 2003-2009

Abstract

Objectives: This study aimed 1) to examine the trends in the prevalence of anemia of the Japanese elderly population and 2) to evaluate the association between hemoglobin concentrations and diet and lifestyle factors, by using data from a population-based, nationwide cross-sectional survey in Japan, from [2003][2004][2005][2006][2007][2008][2009]. Design:A cross-sectional nationally representative survey. Setting: Japan.Participants: A nationally representative sample of 10,606 community dwelling men (n=4656) and women (n=5950) aged 65 years and over.Measurements: Information on anthropometry, dietary intake status, information on current medication, lifestyle habits, and blood biomarker measurements were obtained from the participants. Anemia was defined as hemoglobin concentrations <130 g/L in men and <120 g/L in women. Logistic regression analysis adjusted for subject age was applied to estimate the effect of survey year to anemia prevalence. Multiple regression analysis was applied to estimate the effect of survey year and clinical, dietary and lifestyle factors to hemoglobin values.Results: Anemia prevalence was 19.3% in men and 21.7% in women. When adjusted for age, the prevalence of anemia significantly decreased by each survey year in both men (odds ratio: 0.933, 95% confidence interval: 0.899, 0.968, p<0.001) and women (odds ratio: 0.968, 95% confidence interval: 0.939, 0.999, p=0.040). The multivariate model explained 25% and 22% of the variance in hemoglobin values in men and women, respectively. In both men and women, each unit of increase in BMI, daily smoking, serum ferritin and albumin was positively associated to hemoglobin values, and age was negatively associated. After adjusting for all factors, hemoglobin values were estimated to increase 0.66 g/L per year in men, and 0.68 g/L per year in women. Conclusion:Nutritional status of the Japanese elderly as observed by anemia prevalence and hemoglobin concentrations has improved in recent years.

Canonical Correlation Analysis on the Association Between Sleep Quality and Nutritional Status Among Centenarians in Hainan

“…According to a review of nutritional status survey measured by MNA-SF, the prevalence of the risk of malnutrition (score ≤11 points) was 8-76% among elderly in the community (18). The Japanese Centenarian Nutrition Survey showed that the proportion of malnutrition risk was 34.7% (10), while the proportion of malnutrition risk in our sample reached 87.6%, which may be related to the regional dietary differences (19,20). The risk of having such a high proportion of malnutrition among centenarians should be taken into account, given that a number of previous studies have shown that malnutrition in the elderly is associated with greater risks of acquiring consciousness disorders (21), depression (9), lower quality of life (22), and a higher 5-year mortality rate (23).…”

Ensuring Nutritional Security for Better Health

“…Imai et al in their studies examined the prevalence of anemiaamong Japanese elderly population and evaluated the association between hemoglobin concentrations and diet factors. Their studies showed improved nutritional status of the Japanese elderly adults[4].Kawano et al studied the effect of Vitamin D supplementation on nephrolithiasis in rats [5]. In the research article Sofi et al studied the protective effect of buckwheat products on the development of cardiovascular disease by reducing oxidative stress [6].…”