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Published on: March 14, 2017
High body mass index in children with sickle cell disease: a retrospective single-centre audit
Rachael Hall1, Kate Gardner2, David C Rees2,3
1Department of Haematology, Imperial College London, London, UK.
Insights
High body mass index (BMI) was not linked to disease severity in children with sickle cell disease. However, obesity was more common in females and those with HbSC, indicating a need for further research.
Area of Science:
- Pediatrics
- Hematology
- Public Health
Background:
- Sickle cell disease (SCD) is a genetic blood disorder with varying clinical severity.
- High body mass index (BMI) is a growing concern in pediatric populations, but its impact on SCD is not well understood.
Purpose of the Study:
- To determine the prevalence of high BMI in children with sickle cell disease.
- To investigate the correlation between high BMI and indicators of SCD severity.
Main Methods:
- A retrospective chart review was conducted at a single tertiary pediatric clinic.
- Data from 385 children (ages 2-18) with sickle cell disease (HbSS and HbSC genotypes) were analyzed.
- Included data: BMI, laboratory results, hospital admission rates, and obstructive sleep apnoea (OSA) status.
Main Results:
- 17% of children with SCD were overweight or obese.
- Obesity prevalence was significantly higher in children with HbSC genotype (25%) compared to HbSS genotype (13%).
- No significant correlation was found between high BMI and OSA, hospital admissions, fetal hemoglobin levels, or lactate dehydrogenase levels.
Conclusions:
- High BMI is not associated with increased disease severity in this cohort of children with sickle cell disease.
- Obesity is more prevalent in females and those with the HbSC genotype.
- Further prospective studies are recommended to explore the long-term effects of BMI on SCD outcomes.
Objective:
To assess the prevalence of high body mass index (BMI) in children with sickle cell disease and assess correlation between BMI and disease severity.
Design:
Retrospective chart review followed by statistical analysis.
Setting:
A single tertiary paediatric clinic in inner city London.
Patients:
All patients with sickle cell disease, including homozygous haemoglobin (HbSS) and compound heterozygous Hb (HbSC), age 2-18 years receiving clinical care at the centre, were included in the study.
Interventions:
Height and weight measurements, steady-state laboratory blood tests, hospital admission rates, adjunct therapy such as hydroxycarbamide or blood transfusions and obstructive sleep apnoea (OSA) data were obtained from the hospital electronic patient records.
Main Outcome Measures:
To study the prevalence of high BMI and to identify any correlation between BMI and disease severity.
Results:
385 patients were included. 64 children (17%) were overweight or obese, of which a significantly higher number of children with HbSC were obese or overweight (23 out of 91, 25%) compared with those with HbSS (36 out of 273, 13%), p≤0.001. No correlation was found between high BMI and presence of OSA, and markers of disease severity such as admission rates, fetal haemoglobin or lactate dehydrogenase levels.
Conclusions:
High BMI did not correlate with disease severity in this cohort of patients with sickle cell disease. Obesity was more prevalent in females and those with HbSC. Further prospective studies are needed to determine long-term effects of BMI in disease severity and outcome.
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