Trends in the prevalence of underweight in women across generations in Japan

Otsuka, Hikaru; Tabata, Hiroki; Someya, Yuki; Tamura, Yasuaki

doi:10.1007/s00774-020-01177-z

Cited by 11 publications

(8 citation statements)

References 4 publications

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“…The increasing prevalence of underweight among young females has been a growing problem in Japan [25, 26]. However, this study showed that there is a high prevalence of underweight in males besides females.…”

Section: Discussionmentioning

confidence: 86%

Cross-sectional association of skeletal muscle mass and strength with dietary habits and physical activity among first-year university students in Japan: Results from KEIJI-U study

Kusakabe

Arai

Yamamoto

et al. 2022

Preprint

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BackgroundRecently, the high prevalence of young Japanese people who are underweight has received attention because of its potential impact on healthy life expectancy. Sarcopenia, defined as the presence of low muscle mass and function, is often observed in the underweight. However, few reports have described the prevalence and characteristics of sarcopenia in youth.MethodsIn this cross-sectional study, we measured skeletal muscle mass using a multifrequency bioelectrical impedance analysis device and handgrip strength (HGS) and administered questionnaires on dietary habits and physical activity to 1,264 first-year university students aged 18-20 years (838 males and 426 females). Sarcopenia was diagnosed based on the presence of both low skeletal muscle mass (SMI) and weak HGS according to the Asian Working Group for Sarcopenia.ResultsA total of 145 males (17.3%) and 69 females (16.2%) were diagnosed as underweight. Low SMI was diagnosed in 75 males (8.9%) and 18 females (4.2%), and weak HGS was diagnosed in 28 males (3.3%) and 10 females (2.3%). Then, sarcopenia was diagnosed in 8 males (1.0%) and 5 females (1.2%). There was a significantly higher prevalence of low SMI and/or weak HGS in underweight individuals compared with individuals in the other BMI ranges. The multivariate analyses indicated that SMI and HGS were significantly associated with BMI in both sexes. Furthermore, after adjusting for BMI, both SMI and HGS were significantly associated with physical activity in males, and SMI was significantly associated with energy intake and frequency of breakfast intake in females.ConclusionsFirst-year university students showed a high incidence of being underweight with low SMI and/or weak HGS, but the prevalence of sarcopenia was low in both sexes. BMI, energy intake, frequency of breakfast intake, and physical activity were independently associated with skeletal muscle mass and strength in youth.

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Section: Discussionmentioning

confidence: 86%

Cross-sectional association of skeletal muscle mass and strength with dietary habits and physical activity among first-year university students in Japan: Results from KEIJI-U study

Kusakabe

Arai

Yamamoto

et al. 2022

Preprint

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“…This study agrees with a previous study. 38 In another study, individuals who consumed alcohol more frequently were less likely to be overweight. 40 The majority (68.5%) of the women in this study consumed <180 mL a day.…”

Section: Discussionmentioning

confidence: 97%

“…A previous study found that underweight women have a lower risk of diseases such as hypertension, dyslipidemia, and chronic kidney disease than those who are overweight or have normal weight. 38 Being in a generation of women with a high prevalence of underweight at a young age makes someone more likely to be underweight or overweight/obese at an older age, with several health outcomes. 39 Thus, a healthy diet, physical activity, and adequate sleep are key to attaining and sustaining a healthy weight.…”

Section: Discussionmentioning

confidence: 99%

Health-Related Lifestyles in Relation to Body Mass Index Among Young and Middle-Aged Women in Japan

Singh

Nyamasege

Hawks

et al. 2022

Women's Health Reports

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Background: Being underweight, overweight, or obese can lead to adverse health effects. Hence, it is important to understand the specific factors that change the burden of underweight and overweight to target appropriate disease control strategies. This study was designed to examine the prevalence and factors associated with underweight and overweight among young and middle-aged women in Japan. Materials and Methods: A cross-sectional study was conducted among women aged 20–59 years who participated in health checkups at a regional health care center in 2018 and 2019 ( N = 1722). The assessments included anthropometric, blood pressure measurements, and a standardized self-administered questionnaire. Multivariable logistic regression analysis assessed lifestyle factors associated with body mass index for underweight <18.5 kg/m 2 ) and overweight/obesity (25.0 kg/m 2 and above). Results: The prevalence of underweight and overweight/obesity were 12.3%, and 22.5%, respectively. No lifestyle factors were found to be significantly associated with being underweight. Having dinner within 2 hours before bed was positively associated with being overweight/obese [adjusted odds ratio (AOR): 1.448, 95% confidence interval (CI): 1.014–2.068]. Women who gained 10 kg since their 20s were more likely to fall into overweight/obesity category (AOR: 9.674, 95% CI: 1.014–2.068). Women who were using a lipid-lowering medication (AOR: 3.150, CI: 1.892–5.246) were associated with three times higher risk of being overweight/obese. Hypertension and dyslipidemia were significantly associated with overweight/obesity (AOR: 3.094, 95% CI: 2.201–4.351 and AOR: 2.498, 95% CI: 1.831–3.409, respectively). Conclusion: One in five middle-aged women was overweight or obese, whereas one in eight was underweight. In relation to the prevention of overweight/obesity, specific health promotion messages regarding eating timing should be developed.

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“…38 BMI was so low in the patients of this study, because the prevalence of underweight in women in Japan is higher than that in other countries. 39 We need to develop preconception care for women with SLE contemplating pregnancy that includes weight management and nutritional guidance as well as the assessment of Vitamin D, BMI, and physical activity to reduce the risk of normal osteoporosis.…”

Section: Discussionmentioning

confidence: 99%

Low pre-pregnant body mass index is a risk factor for the decrease of postpartum bone mineral density in systemic lupus erythematosus patients received glucocorticoid therapy

Ishida¹,

Hiramatsu²,

Nakamura³

et al. 2022

Lupus

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Objectives This study investigated postpartum bone mineral density (BMD) in patients with systemic lupus erythematosus (SLE) receiving long-term glucocorticoid (GC) therapy, assessed risk factors for decreased postpartum BMD, and evaluated change of BMD after postpartum initiation or restarting of osteoporosis drugs. Methods We retrospectively examined 30 SLE patients who gave birth and 31 non-pregnant SLE patients. In the postpartum SLE patients, BMD was measured after delivery and 1 year later. Multivariate analyses were performed to assess risk factors for decreased BMD in postpartum SLE patients. Results Patient age at pregnancy was 34.5 ± 4.5 years, and SLE duration was 9.7 ± 6.0 years. The mean prednisolone dose was 9.7 ± 3.2 mg/day. Body mass index (BMI) was 21.6 ± 2.2 kg/m2, with 13 women (43%) experiencing their first delivery. Postpartum BMD was 1.080 ± 0.120 g/cm2 in the lumbar spine and 0.834 ± 0.109 g/cm2 in the total hip. Bone loss occurred in six patients (21%) in the lumbar spine and 11 patients (37%) in the total hip. Postpartum lumbar spine BMD was significantly reduced compared to that in the non-pregnant group (1.143 ± 0.120 g/cm2, p = 0.048). Multivariate analysis identified gestational age and low BMI before pregnancy as risk factors for hip bone loss. Conclusion Postpartum BMD significantly decrease in SLE patients receiving long-term GC, and low BMI before pregnancy was a risk factor for the decrease. Preconception care to prevent osteoporosis and that regularly monitors BMD after delivery are needed.

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Trends in the prevalence of underweight in women across generations in Japan

Cited by 11 publications

References 4 publications

Cross-sectional association of skeletal muscle mass and strength with dietary habits and physical activity among first-year university students in Japan: Results from KEIJI-U study

Cross-sectional association of skeletal muscle mass and strength with dietary habits and physical activity among first-year university students in Japan: Results from KEIJI-U study

Health-Related Lifestyles in Relation to Body Mass Index Among Young and Middle-Aged Women in Japan

Low pre-pregnant body mass index is a risk factor for the decrease of postpartum bone mineral density in systemic lupus erythematosus patients received glucocorticoid therapy

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