Body composition in young female adults with Type 1 diabetes mellitus. A prospective case-control study

Time-trends in body mass index, and overweight and obesity as independent risk factors for diabetes angiopathy in young females with type 1 diabetes - A nationwide study in Sweden

AIMS

To examine time-trends in BMI-distributions of young females with and without type 1 diabetes (T1D), with focus on the upper half of the distribution i.e., the median and above, and to explore if overweight and obesity independently increase risk of diabetes angiopathy.

METHODS

Population-based cohort study of 3,473 females with T1D, 16-35 years, identified in the Swedish National Diabetes Registers, January 2005 to October 2015, and 8,487 females from the background population. BMI-distributions were examined using kernel density estimates and quantile regression. Hazard ratios (HRs) and 95 % confidence intervals (CIs) for angiopathy in overweight/obese subjects were estimated with adjusted Cox regression.

RESULTS

The BMI-distribution in females with T1D was right shifted to that of the background population (p < 0.001). The 90th percentile and median BMI increased equally overtime in both groups, but females with T1D started from a higher baseline. In T1D, HRs were significantly increased for any angiopathy in individuals with obesity (adj HR 1.37 (CI 1.14-1.64)), and for retinopathy; adj HRs (CIs): overweight; 1.15 (1.02-1.29), obesity; 1.30 (1.08-1.56).

CONCLUSIONS

Females with T1D have increasing BMI overtime and are heavier than females without T1D. Overweight and obesity are by themselves risk factors for angiopathy.

Higher Body Fat in Children and Adolescents With Type 1 Diabetes-A Systematic Review and Meta-Analysis

Aims

Higher prevalence of overweight and obesity in children and adolescents with type 1 diabetes (T1D) suggests alterations are required in body composition. However, differences in body composition between children with T1D and typically developing children (TDC) have not been synthesized using meta-analysis. Therefore, we conducted a systematic review and meta-analysis to compare body composition between children with T1D and TDC, and to explore the role of disease and non-disease related factors in potential body composition differences.

Methods

Studies were performed comparing dual-energy x-ray absorptiometry-acquired total body fat and lean mass, absolute (kg) and relative (%) values, between children with T1D and TDC. We reported mean differences with 95% confidence intervals (CI) from meta-analysis and relative between-group %-differences. We used meta-regression to explore the role of sex, age, height, body mass, body mass index, Hemoglobin A1c, age of onset, disease duration, and insulin dosage in the potential body composition differences between children with T1D and TDC, and subgroup analysis to explore the role of geographic regions (p < 0.05).

Results

We included 24 studies (1,017 children with T1D, 1,045 TDC) in the meta-analysis. Children with T1D had 1.2 kg more fat mass (kg) (95%CI 0.3 to 2.1; %-difference = 9.3%), 2.3% higher body fat % (0.3-4.4; 9.0%), but not in lean mass outcomes. Age of onset (β = -2.3, -3.5 to -1.0) and insulin dosage (18.0, 3.5-32.6) were negatively and positively associated with body fat % mean difference, respectively. Subgroup analysis suggested differences among geographic regions in body fat % (p < 0.05), with greater differences in body fat % from Europe and the Middle East.

Conclusion

This meta-analysis indicated 9% higher body fat in children with T1D. Earlier diabetes onset and higher daily insulin dosage were associated with body fat % difference between children with T1D and TDC. Children with T1D from Europe and the Middle East may be more likely to have higher body fat %. More attention in diabetes research and care toward body composition in children with T1D is needed to prevent the early development of higher body fat, and to minimize the cardiovascular disease risk and skeletal deficits associated with higher body fat.

Nutritional Status of Pediatric Patients with Type 1 Diabetes Mellitus from Northeast Poland: A Case-Control Study

INTRODUCTION

A significant increase in the incidence of overweight and obesity is observed among children and adolescents. This problem began to occur not only in healthy populations, but also among young diabetics. The aim of the study was to assess the nutritional status of children and adolescents with type 1 diabetes mellitus (T1DM) compared to those in a control group of healthy subjects as well as to determine the influence of the type of insulin therapy used.

METHODS

The case-control study included 169 people aged 9-15 years. The study group (n = 85) consisted of Polish children with T1DM, and the control group (n = 84) consisted of healthy subjects. The assessment of the nutritional status included anthropometric measurements. Analysis of body composition was carried out by bioelectrical impedance analysis. To assess nutritional behavior a questionnaire was used. Approval was obtained from the ethics committee of the Medical University of Białystok (no. R-I-002/168/2017).

RESULTS

Median body mass index (BMI) value in the T1DM group was 19.2 kg/m² and was statistically significantly (P < 0.05) higher than in the control group (17.8 kg/m²). Normal BMI was found in 90% of the individuals in the CSII group, while in the MDI group it was only 61%. The percentage of fat mass was 19.1% in the T1DM group and 17.6% in the healthy group. The percentage of muscle mass was 36.1% and 34.5%, respectively. The abdominal obesity according to waist circumference (above 90th percentile) turned out to be statistically significant (P < 0.01) and occurred more often in adolescents with T1DM (27%), while in the healthy group it was 12%.

CONCLUSIONS

The healthy individuals as well as the majority of the children and adolescents with type 1 diabetes mellitus were well nourished. People using personal insulin pumps showed better nutritional status than those using insulin pens.

Type 1 diabetes and body composition in youth: A systematic review

An increasing prevalence of overweight and obesity was reported in youth with type 1 diabetes, likely due to the intensive insulin treatment and/or an unhealthy lifestyle. Analyses of body composition may help describe the real increase in fat mass, which contributes to the diabetes-related cardio-metabolic risk. This systematic review evaluated the current literature on body composition assessments in youth with type 1 diabetes and the potential association with cardio-metabolic, functional, or behavioural risk factors. A systematic search of literature studies reporting assessments of body composition in youth with type 1 diabetes published until April 2018 was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Twenty-three articles with different study designs reported assessments of body composition. The following methods were used to assess body composition: computerized dual energy X-ray absorptiometry (n = 10), bioelectrical impedance analysis (n = 8), skinfold thickness measurement (n = 4), and air displacement plethysmography (n = 1). Higher fat mass values were found in youth with type 1 diabetes in seven of the 13 studies that included a healthy control group. Most studies investigating the association between body composition and cardio-metabolic risk factors showed that youth with higher fat mass levels had poor glycaemic control, dyslipidaemia, or higher blood pressure. Assessments of body composition may represent a useful clinical procedure to support decision-making in type 1 diabetes management. Further research is needed to standardize the assessment of body composition and develop a consensus guideline.

Sex differences in cardiovascular disease risk in adolescents with type 1 diabetes

BACKGROUND

Cardiovascular disease is seen at a younger age and at a higher prevalence in patients with type 1 diabetes than in the general population. It is well described that women with type 1 diabetes have a higher relative risk of cardiovascular disease than men with type 1 diabetes, unlike that seen in the general population. The pathophysiology behind this is unknown.

OBJECTIVE

We performed a cross-sectional study to examine sex differences in cardiovascular disease risk factors in adolescents with type 1 diabetes between ages 13 and 20 years, compared with children of a similar age without type 1 diabetes.

METHODS

All patients underwent a dual energy x-ray absorptiometry scan to measure body composition and a pulse wave test measure of arterial elasticity. Fasting serum lipid levels, apolipoprotein B, and apolipoprotein C-III levels were measured in each patient. Twenty-nine children with type 1 diabetes (10 girls, 19 boys) and 37 healthy children (18 girls, 19 boys) participated.

RESULTS

Although no sex differences for body mass index (P = 0.91) and glycosylated hemoglobin (P = 0.69) were seen, girls with type 1 diabetes had a significantly higher percent trunk fat compared with boys (P = 0.004). No sex differences were found (P > 0.05) for percent trunk fat in adolescents without diabetes. There was no sex difference among any other cardiovascular risk factors in either children with or without diabetes.

CONCLUSIONS

Female adolescents with type 1 diabetes have more centrally distributed fat, which may contribute to their relatively higher cardiovascular disease risk. Attenuation of the central distribution of fat through exercise and dietary modifications may help ameliorate their subsequent cardiovascular disease burden.

Abdominal adiposity and cardiovascular risk factors in adolescents with type 1 diabetes

AIM

To analyze the prevalence of abdominal adiposity and other traditional risk factors for cardiovascular disease in a large sample of Italian adolescents with type 1 diabetes mellitus (T1DM).

METHODS

T1DM adolescents (n=412 age: 17.3 ± 0.9 years) were enrolled from 18 clinical centres. Anthropometric and laboratory parameters, blood pressure and data on insulin treatment were registered. Metabolic syndrome (MetSy) was defined according to the International Diabetes Federation criteria.

RESULTS

Abdominal obesity was the most common risk factor (20.1%) in females, while hypertension in males (25.1%). MetSy was found in 9.5% patients, predominantly in females. Patients with MetSy exhibited higher insulin requirement per body surface area and higher glycated hemoglobin than patients without MetSy. Overweight/obese patients had a much higher prevalence of MetSy than normal weight patients. The logistic regression analysis showed that just waist-to-height ratio and insulin dose per body surface area contributed to discriminate subjects with the MetSy from those without.

CONCLUSION

Adolescence is a critical period in determining risk of future vascular complications in T1DM. Pediatric diabetologists need to be aware of the considerable occurrence of abdominal adiposity and MetSy in T1DM patients, particularly in females, and should make every effort to achieve normal weight and better health outcomes.