Does income have a non-linear impact on residents' BMI? Re-examining the obesity Kuznets curve.

ABSTRACT:

Background

After more than 40 years of growth, the income of Chinese residents has greatly increased; however, the problems of overweight and obesity among residents have become increasingly prominent.

Methods

We used data from the China Family Panel Studies (CFPS) to study the relationship between residents' income and obesity using the instrumental variable (IV) method.

Results

The impact of income on residents' body mass index (BMI) is an inverted U-shape; that is, when income is low, BMI significantly rises with income, and when per capita income exceeds 57,066 yuan in 2023 prices (equivalent to 8,098 dollars), further increases in income will lead to a decrease in BMI.

Conclusions

The results suggest that the impact of income on resident obesity may be rel

SUBMITTER: Du N 

PROVIDER: S-EPMC11895372 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature