Bisphenol A (BPA) has been recognized as an endocrine disrupting chemical and identified as an obesogen. Although once ubiquitous, human exposure to BPA is declining due to its substitution with other bisphenols. Two structurally similar substitutes, bisphenol S (BPS) and bisphenol F (BPF), have raised similar concerns, although fewer studies have been conducted on these newer derivatives.
We used data from the US National Health and Nutrition Examination Surveys from the years 2013-2016 to evaluate associations between BPA, BPS, and BPF and body mass outcomes among children and adolescents aged 6 to 19 years. Concentrations of BPA, BPS, and BPF were measured in spot urine samples using high performance liquid chromatography with tandem mass spectrometry.
General obesity was defined as ≥95thpercentile of age- and sex-standardized body mass index (BMI) z-scores according to 2000 US norms. Abdominal obesity was defined as ratios of waist circumference to height ≥0.5. BPA, BPS, and BPF were detected in 97.5%, 87.8% and 55.2% of urine samples, respectively. Log-transformed urinary BPS concentrations were associated with an increased prevalence of general obesity (OR=1.16, 95% CI: 1.02, 1.32) and abdominal obesity (OR=1.13, 95% CI: 1.02, 1.27). BPF detection (vs. not detected) was associated with an increased prevalence of abdominal obesity (OR=1.29, 95% CI: 1.01, 1.64) and continuous BMI z-score (β=0.10, 95% CI: 0.01, 0.20). BPA and total bisphenols were not statistically significantly associated with general obesity, abdominal obesity, or any body mass outcome.
This study suggests that BPA substitute chemicals are correlated with obesity in contemporary children.
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