A population-based study on welding exposures at work and respiratory symptoms

Area of Science:

• Occupational Health
• Respiratory Medicine
• Environmental Health

Background:

• Previous research indicated excess asthma risk from occupational exposures.
• The European Community Respiratory Health Survey (ECRHS II) aimed to investigate the long-term effects of welding on respiratory health.

Purpose of the Study:

• To determine if occupational welding increases the risk of asthma symptoms, wheeze, and chronic bronchitis.
• To identify specific welding-related risk factors for respiratory conditions.

Main Methods:

• A 9-year follow-up study of a random population sample across 22 European centers.
• 316 male participants reporting welding at work completed a questionnaire on welding practices and exposures.
• Log-binomial regression models were used to analyze the association between welding exposures and respiratory symptoms, with cumulative exposure estimated using a welding fume database.

Main Results:

• Welding was not associated with increased asthma symptoms or wheeze, but showed an association with chronic bronchitis symptoms (PR = 1.33).
• Higher prevalence ratios for chronic bronchitis were observed when welding galvanized steel/iron (PR = 2.14) and manual welding stainless steel (PR = 1.92).
• Increased prevalence of wheeze was noted in individuals welding painted metal (PR = 1.66) and using manual metal arc welding (PR = 1.69).

Conclusions:

• Occupational welding, particularly with galvanized, stainless steel, or painted materials, is associated with an increased risk of chronic bronchitis and wheeze.
• Welding fumes from coated materials represent a significant respiratory hazard.
• The findings underscore the critical importance of implementing preventive strategies in occupational settings involving welding.