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Life-course BMI and biomarkers in persons aged 60 years or older: a comparison of the USA and Costa Rica

  • David H Rehkopf (a1), Andrew Duong (a1), William H Dow (a2) and Luis Rosero-Bixby (a3)
Abstract
Objective

There is a large literature linking current BMI to levels of cardiovascular risk biomarkers, but it is unknown whether measures of BMI earlier in the life course and maximum BMI are predictive of current levels of biomarkers. The objective of the current study was to determine how current, maximum and age-25 BMI among individuals over the age of 60 years are associated with their current levels of cardiovascular risk biomarkers.

Design

Cross-sectional study with retrospective recall.

Setting

Costa Rica (n 821) and the USA (n 4110).

Subjects

Nationally representative samples of adults aged 60 years or over.

Results

We used regression models to examine the relationship between multiple meaures of BMI with four established cardiovascular risk biomarkers. The most consistent predictor of current levels of systolic blood pressure, TAG and HDL-cholesterol was current BMI. However, maximum BMI was the strongest predictor of glycosylated Hb (HbA1c) and was also related to HDL-cholesterol and TAG. HbA1c was independent of current BMI. We found that these relationships are consistent between Costa Rica and the USA for HbA1c and for HDL-cholesterol.

Conclusions

Current levels of cardiovascular risk biomarkers are not only the product of current levels of BMI, but also of maximum lifetime BMI, particularly for levels of HbA1c and for HDL-cholesterol. Managing maximum obtained BMI over the life course may be most critical for maintaining the healthiest levels of cardiovascular risk.

Copyright
Corresponding author
*Corresponding author: Email drehkopf@stanford.edu
References
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Public Health Nutrition
  • ISSN: 1368-9800
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