The health hazards of asbestos removal

Our plain-English summary of The health hazards of asbestos removal, by L. MacDonald (JAMA, 1992).

The study

• Author: L. MacDonald
• Journal: JAMA
• Published: 1992;267(1):52-3
• Type of article: Comment, Letter
• Read it: PubMed · Publisher
• In J-M's library: Johns-Manville's company medical library held a copy (J-M no. 004462).

In plain English

This item is a letter to the editor, not a research study. The author coordinated an asbestos screening program in the sheet-metal industry for the Sheet Metal Occupational Health Institute Trust. The letter criticized a 1991 JAMA report on asbestos removal by the American Medical Association's Council on Scientific Affairs, calling it unbalanced and shallow. The author argued that the report ignored two issues: how asbestos in a building can be managed if no one knows it is there, and the unknown health effects on building occupants of low levels of exposure. The author reported that approximately 32% of the 18000 contractors and sheet-metal workers tested so far had detectable asbestos-related disease. Recent screening participants had spent two thirds of their worklife unknowingly around asbestos in buildings. The letter did not describe how workers were screened or how disease was defined. The author suggested that the Council reconsider its position in light of a newly released EPA evaluation. In a published reply, Jerod M. Loeb of the Council wrote that, on the basis of most recent evidence, the threat asbestos poses to building occupants is minimal.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: letter to the editor (correspondence) criticizing an AMA Council on Scientific Affairs report, with a published reply
• Who was studied: contractors and sheet-metal workers in an asbestos screening program in the sheet-metal industry; 18000 tested so far (no location, dates or methods given)
• Exposure: asbestos in buildings, disturbed unknowingly during sheet-metal work; recent screening participants had spent two thirds of their worklife around it
• Main results:
  • The author reported that approximately 32% of the 18000 contractors and sheet-metal workers tested so far had detectable asbestos-related disease
  • The author argued that the Council report ignored how to manage asbestos in a building when its presence is unknown, and the unknown health effects of low-level exposure for building occupants
  • In the published reply, Jerod M. Loeb of the AMA Council on Scientific Affairs wrote that, on the basis of most recent evidence, the threat asbestos poses to building occupants is minimal
• The authors' conclusion: The author suggested that the Council should reconsider its position in light of a newly released EPA evaluation under the Asbestos Hazard Emergency Response Act, which the author said linked serious problems to inadequate inspections, among other things

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