Occupational, Environmental, and Lifestyle Factors and their Contribution to Preterm Birth - An Overview

Area of Science:

• Reproductive Health
• Public Health
• Environmental Medicine

Background:

• Preterm birth (PTB) is a leading cause of infant mortality and morbidity globally, with over 60% occurring in Africa and South Asia.
• Established risk factors include maternal stress, infections, diabetes, high blood pressure, and multiple pregnancies.
• Limited but growing data suggest occupational, environmental, and lifestyle factors may also contribute to PTB.

Purpose of the Study:

• To review current knowledge on occupational, environmental, and lifestyle factors associated with preterm birth.
• To propose novel etiological explanations for PTB.
• To inform preventative strategies for pregnant women and women of reproductive age.

Main Methods:

• Literature review and synthesis of existing data on PTB risk factors.
• Analysis of emerging evidence on environmental exposures and lifestyle choices.
• Identification of gaps in current research and recommendations for future studies.

Main Results:

• While established risk factors are well-documented, evidence linking occupational, environmental, and lifestyle factors to PTB is emerging but often inconclusive.
• Specific environmental exposures, including heavy metals (e.g., lead), air pollutants, bisphenol A, phthalates, and environmental tobacco smoke (ETS), show promising associations with increased PTB incidence.
• These findings suggest potential targets for intervention and prevention.

Conclusions:

• Occupational, environmental, and lifestyle factors warrant further investigation as contributors to preterm birth.
• Pregnant women and women of reproductive age should be advised to minimize exposure to identified environmental risks and adopt healthy lifestyles.
• Well-designed epidemiological studies are crucial to elucidate the complex etiology of PTB and inform public health policies.