Association between phthalate exposure and lower lung function in an urban elderly population: A repeated-measures...

Area of Science:

• Environmental Health
• Gerontology
• Pulmonology

Background:

• Lung function is a critical indicator of health and longevity.
• Research on the impact of phthalate exposure on lung function, particularly in older adults, is limited.

Purpose of the Study:

• To investigate the association between exposure to specific phthalate metabolites and lung function in an elderly population.
• To determine if phthalate exposure influences the rate of lung function decline in seniors.

Main Methods:

• Longitudinal study involving 559 elderly participants (≥60 years) in Seoul, Korea, with data collected over three annual surveys (2012-2015).
• Measurement of urinary phthalate metabolites including mono-(2-ethyl-5-hydrohexyl) phthalate (MEHHP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), and mono-n-butyl phthalate (MnBP).
• Assessment of lung function using spirometry and analysis of associations using linear mixed-effects models.

Main Results:

• Increased levels of MEHHP, MEOHP, and MnBP were inversely associated with forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC).
• A doubling of creatinine-adjusted MnBP levels was significantly associated with an increased annual rate of decline in FVC.

Conclusions:

• Urinary phthalate metabolite levels are associated with diminished lung function in the elderly.
• Phthalate exposure may contribute to accelerated lung function decline in older adults, highlighting potential environmental health risks.