National prevalence of underweight, overweight and obesity in Turkey: cross sectional study of a representative adult population

Delibaşı, Tuncay; Karaaslan, Yaşar; Üstün, İhsan; Köroğlu, Ertuğrul; Hosgor, Seref

doi:10.2478/s11536-007-0024-4

Cited by 19 publications

(16 citation statements)

References 26 publications

(69 reference statements)

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“…The "Mediterranean diet" contains plenty of fruit, vegetables, and pulses compared with meat (118), which may in part explain this observation because stricter adherence to the diet during pregnancy exacerbated vitamin B-12 deficiency (52). In addition, obesity rates are high in these regions (119), and obesity has been shown to be associated with low vitamin B-12 (79,(120)(121)(122). The link between obesity, gestational diabetes, and low vitamin B-12 concentrations has not been fully explored, but because the former 2 conditions are independently associated with fetal macrosomia, they may partly compensate for or mask the associations between vitamin B-12 and LBW (123,124).…”

Section: B-12 Insufficiency In Pregnancy and Birth Weightmentioning

confidence: 99%

Prevalence of vitamin B-12 insufficiency during pregnancy and its effect on offspring birth weight: a systematic review and meta-analysis

Sukumar

Rafnsson

Kandala

et al. 2016

The American Journal of Clinical Nutrition

104

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Background: Vitamin B-12 and folate are micronutrients essential for normal embryogenesis. Vitamin B-12 insufficiency in pregnancy is high in certain parts of the world, such as India, and although this has been linked to low birth weight (LBW) in these populations, the relation between vitamin B-12 and birth weight (BW) elsewhere is unknown. Objectives: We performed a systematic review to assess 1) the worldwide prevalence of vitamin B-12 insufficiency in pregnancy and 2) its association with BW. Design: A search of 5 electronic databases was performed to identify eligible articles. Random-effects meta-analysis was conducted according to geographic regions and pregnancy trimesters for the prevalence subreview and by categorical measures of BW. Results: A total of 57 and 23 articles were included for the prevalence and BW subreviews, respectively. The pooled estimates of vitamin B-12 insufficiency were 21%, 19%, and 29% in the first, second, and third trimesters, respectively, with high rates for the Indian subcontinent and the Eastern Mediterranean. The large heterogeneity between studies was partially addressed by creating a standardized score for each study (mean vitamin B-12 insufficiency O cutoff value), which internally corrected for geographic region, trimester, and assay type. Twelve of the 13 longitudinal studies included showed a decrease in mean or median vitamin B-12 across trimesters. Pooled analysis showed nonsignificantly lower maternal vitamin B-12 concentrations in LBW than in normal-BW infants and higher odds of LBW with lower vitamin B-12 values (adjusted OR: 1.70; 95% CI: 1.16, 2.50), but studies from India largely contributed to the latter. Conclusions: Our review indicates that vitamin B-12 insufficiency during pregnancy is common even in nonvegetarian populations and that concentrations of vitamin B-12 decrease from the first to the third trimester. There is no consistent association between vitamin B-12 insufficiency and LBW. However, given the long-term risks of LBW, this observation warrants further cohort studies and randomized controlled trials.Am J Clin Nutr 2016;103:1232-51.

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Section: B-12 Insufficiency In Pregnancy and Birth Weightmentioning

confidence: 99%

Prevalence of vitamin B-12 insufficiency during pregnancy and its effect on offspring birth weight: a systematic review and meta-analysis

Sukumar

Rafnsson

Kandala

et al. 2016

The American Journal of Clinical Nutrition

104

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“…Whilst the focus is on obesity, the literature investigates factors associated with BMI [see [49][50][51][52] and the variables commonly identified are also associated with health status. It may be that poor body image leads somebody to report poor health [53].…”

Section: Discussionmentioning

confidence: 99%

Self-reported general health and Body Mass Index: a U-shaped relationship?

Norman

Fraser

2013

Public Health

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Objectives:A sizable literature demonstrates an increased likelihood of self-reported poor health with increasing Body Mass Index (BMI). A U-shaped relationship between BMI and health is evident in research but we do not believe the health of people who are underweight gets the attention it deserves. We investigate the relationship between BMI categories and poor general health including those persons who are underweight.Study design: Cross-sectional study Methods:Data were obtained from the Health Survey for England pooled for 2006-08 to provide a sample of 26 596 adults aged 16-74 in a series of binary logistic regression models to determine the likelihood of people reporting their general health as being poor. Results:Controlling for individual level demographic, socio-economic and health-related behaviour variables and area deprivation we find a clear U-shaped relationship between BMI and health. Conclusions:The literature largely focuses on the relationship between obesity and health and this is understandable given that many more persons are obese than are underweight. A person who is underweight is about as likely to report poor general health as a person who is obese.

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“…Considering the accelerated food and nutritional transition and the double burden of malnutrition in Iran [12], as observed in neighboring countries [30], this behavior may have a profound impact on the health and well-being of future generations. Well-designed educational campaigns aimed at promoting optimal eating and nutrition practices among vulnerable groups, including school children, are needed.…”

Section: Discussionmentioning

confidence: 99%

Obese and female adolescents skip breakfast more than their non-obese and male peers

Rashidi

Mohammadpour-Ahranjani

Karandish

et al. 2007

Open Medicine

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AbstractWe examined the association between overweight/gender and skipping breakfast among adolescent students in Tehran city using a cross-sectional study and a multistage random sampling method. All educational zones in Tehran city were covered during the educational year of 2000–01. In total, 2321 students aged 11–16 years (1068 male; 1263 female) participated in the study. Weight and height were measured and body mass index (BMI; kg/m2) was calculated. Overweight, pre-obesity and obesity were defined as BMI ≥ 85th, 85th to 95th, and ≥ 95th percentile of age-sex-specific BMI reference values, respectively. Self-reported frequency of breakfast consumption was categorized as usual/always, often, and rarely/never (5–7, 2–4 and 0–1 times/wk, respectively). Student’s t and Chi-square tests were employed to analyze the data. Statistical inferences were made at α = 0.05. In boys and girls, the mean ± standard deviation of BMI was 19.8 ± 4.0 and 20.6 ± 4.1 kg/m2, the 18.8% and 23.1% were overweight, and 7.3% and 8.3% were obese, respectively. There was a significant difference in the frequency of breakfast consumption between obese and normal male students (P < 0.001). Differences between pre-obese and normal, and obese and normal female students were also significant (P < 0.002 and P < 0.001, respectively). A significant difference was found in the frequency of breakfast consumption between male and female adolescents in all three categories (P < 0.001). These results suggest that obese and female adolescents are more likely to skip breakfast than their normal and male peers and are therefore at higher risk for growth deficits and low educational performance. Preventive/educational programs are urgently needed in this age group.

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National prevalence of underweight, overweight and obesity in Turkey: cross sectional study of a representative adult population

Cited by 19 publications

References 26 publications

Prevalence of vitamin B-12 insufficiency during pregnancy and its effect on offspring birth weight: a systematic review and meta-analysis

Prevalence of vitamin B-12 insufficiency during pregnancy and its effect on offspring birth weight: a systematic review and meta-analysis

Self-reported general health and Body Mass Index: a U-shaped relationship?

Obese and female adolescents skip breakfast more than their non-obese and male peers

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