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Updated: Feb 23, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Total Oxidant and Antioxidant Status in Prepubertal Children with Obesity
Grażyna Rowicka1, Hanna Dyląg1, Jadwiga Ambroszkiewicz2
1Nutrition Department, Institute of Mother and Child, Warsaw, Poland.
Insights
Obese children show signs of oxidative stress, indicated by higher oxidant capacity and lower antioxidant capacity. Early intervention is crucial to prevent long-term health issues related to free radical damage.
Area of Science:
- Pediatrics
- Biochemistry
- Metabolic Disorders
Background:
- Obesity is linked to increased free radical production.
- Uncontrolled free radicals can cause oxidative stress and health complications.
- The presence of oxidative stress in obese prepubertal children requires investigation.
Purpose of the Study:
- To evaluate the presence and extent of oxidative stress in obese prepubertal children.
- To compare oxidative stress markers between obese and nonobese children.
Main Methods:
- The study included 83 children aged 2-10 years (62 obese, 21 controls).
- Serum levels of total oxidant capacity (TOC), total antioxidant capacity (TAC), oxidized low-density lipoprotein (ox-LDL), lipids, glucose, and C-reactive protein (CRP) were measured.
- Oxidative stress index (OSI) was calculated.
Main Results:
- Obese children exhibited significantly higher TOC and lower TAC compared to controls.
- The oxidative stress index (OSI) was significantly higher in the obese group.
- Obese children had higher median CRP and lower HDL cholesterol levels. TAC negatively correlated with ox-LDL, and obesity duration positively correlated with TOC.
Conclusions:
- Obesity-related oxidative stress is present even in prepubertal children.
- Early diagnosis and treatment of obesity are vital for preventing free radical damage and associated complications.
Aims:
Obesity is accompanied by the formation of oxygen free radicals, whose intensified activity without effective defense mechanisms can lead to oxidative stress and related complications. We evaluated the presence of oxidative stress in obese prepubertal children.
Methods:
The study included 83 healthy children aged 2-10 years (62 with obesity and 21 nonobese controls). Total oxidant capacity (TOC), total antioxidant capacity (TAC), oxidized low-density lipoprotein (ox-LDL), lipid parameters, glucose, and C-reactive protein (CRP) were measured in serum. Oxidative stress index (OSI) was calculated.
Results:
Serum TOC concentration was significantly higher (p < 0.05) and TAC concentration was lower (p < 0.05) in obese children. OSI was higher (p < 0.01) in obese subjects compared with controls. CRP levels were normal in all children, but median CRP value was higher (p < 0.01) and HDL cholesterol levels were lower (p < 0.05) in the obese group. We found a significant negative correlation between TAC and ox-LDL concentrations (r = -0.27, p < 0.05) in obese children. Furthermore, obesity duration was positively correlated with TOC level (r = 0.32, p < 0.05) in this group.
Conclusions:
Obesity-related oxidative stress already occurs in prepubescence. Early obesity diagnosis and the necessary therapeutic activity implementation is a vital strategy for the prophylaxis of free radical damage and related multiorgan complications.
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