Good health is, to a large extent, a matter of good engineering. This study takes that view:
“An Industrial Hygienist Looks at Porn,” Deborah Gold, Journal of Occupational and Environmental Hygiene, vol. 12, no. 8, 2015, pp. 184-190. (Thanks to Tom Gill for bringing this to our attention.).

The abstract says:
Deborah Gold, MPH, CIH, is the former Deputy Chief for Health of the Division of Occupational Safety and Health (aka Cal/OSHA) within the California Department of Industrial Relations. During her tenure in that position, and in her previous positions with the agency as a Senior Industrial Hygienist and Senior Safety Engineer she was involved with enforcement actions, and regulatory development concerning the California adult film industry….
Occupational health professionals can contribute to protectingemployees in this industry by recognizing the hazards in this industry as legitimate issues that are within our professional purview to address. Industrial hygienists can advocate for protecting workers against nicotine exposure without taking a position on banning the sale of cigarettes. Similarly, protection for workers in the adult film industry should not depend on individual views on the content of the material produced any more than requiring guards on printing presses should depend on the content of the publication.
Here’s a January 2013 NPR report on one aspect of this, that includes an interview with Deborah Gold: “Porn Industry Turned Off By L.A. Mandate For Condoms On Set“.