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November 14, 2021Lipids in Health and DiseaseOpen Access

Sex differences in the non-linear association between BMI and LDL cholesterol in middle-aged and older adults: findings from two nationally representative surveys in China

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Key result

In Chinese adults, the BMI and LDL cholesterol relationship was inverted U-shaped in males with a peak at 27.1 kg/m2, while an approximately linear positive association was observed in females.

Why the study?

The relationship between BMI and LDL-C had not been clearly elucidated in middle-aged and older adults.

Population

12,273 participants aged 45 to 75 years from two nationally representative surveys in China

Comparison

Association across BMI levels in males vs females

Design

Cross-sectional analysis of two nationally representative surveys

Authors

HLHaibin LiJMJiahui MaDZDeqiang Zheng

Discussion

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Member takes

Overview

Sex-specific BMI-LDL-C patterns may inform risk stratification; leaves open causality and prospective validation.

Study Design

Type

Cross-Sectional (n=12,273)

Multicenter

Yes

Structured PICO

P
Population
12,273 adults aged 45 to 75 years without cardiovascular disease or cancer from two nationally representative surveys in China, evaluated for the association between BMI and LDL cholesterol.
O
Outcome
Non-linear dose-response relationship between BMI and LDL-Csurrogate

Main Result

p-value: p=<0.001

The association between BMI and LDL-C exhibits significant sex differences, presenting as an inverted U-shape in middle-aged and older Chinese men and an approximately linear relationship in women.

Limitations

  • Cross-sectional study design cannot establish a causal relationship between BMI and LDL-C.
  • Data on obesity-related indices, such as percent body fat and visceral fat area, were not available.
  • Residual confounders such as hormone treatment may still exist despite sensitivity analyses.
  • Cardiometabolic health was defined according to the severity of metabolic syndrome rather than more accurate quantitative indicators like coronary artery calcium score.

Cite This Study

Li et al. (2021) conducted a cross-sectional in Dyslipidemia and Obesity (n=12,273). Body mass index (BMI) vs. Different BMI levels was evaluated on Non-linear dose-response relationship between BMI and LDL-C (p=<0.001). In Chinese adults, the BMI and LDL cholesterol relationship was inverted U-shaped in males with a peak at 27.1 kg/m2, while an approximately linear positive association was observed in females.

synapsesocial.com/papers/6a98efd9dea2d226f518eb57https://doi.org/10.1186/s12944-021-01591-w
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Also Consider

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