Dr C.R.Snyman

Dr C.R. Snyman qualified in medicine at Stellinbosch University in 1977 and undertook post-graduate studies in Occupational Health at the University of the Witwatersrand. He has worked at Eskom studying effects of asbestos insulation material on health and since 1990 has run a private occupational health consultancy.

Medical science has spent a considerable amount of time and money on research into the health effects of Fiberglass. Fiberglass is a dusty product. Other dusty minerals such as silica and asbestos are known to cause Psychoneurosis (also known as dust lung disease) and certain types of lung cancer. Research has sought to establish whether or not exposure to fiberglass dust presents the same or similar hazards.

Surveys of the health of thousands of people who had worked for many years in the fiberglass industry show the following:

No Mesothelioma due to Fiberglass. (Mesothelioma is a type of cancer caused by asbestos).

No dust lung disease

Exposure by inhalation to very high levels of Fiberglass dust resulted in mild inflammation of the lungs. This inflammation receded when exposure ceased.

The difference between fiberglass and other mineral fibers lies in the durability (or biopersistance) of the fiber. Glass differs considerably in its chemical and physical characteristics:

It is a non-crystalline structure

It is the crystalline structure of natural mineral products that damages the lung.

Glass breaks into shorter, but not thinner fragments. The dangerous fibrous products are the ones which keep their length but break into thinner particles.

Glass is eroded and dissolved in certain solutions, of which the fluid inside the lung is an example.

Recent experiments have shown how glass fibers lose their smooth surface and become brittle in the lung to the point where they are easily removed by natural body mechanisms.

In post-mortem studies conducted upon former fiberglass workers, no more fiber particles were found in their lungs than were  found in the lungs of people who were not exposed to fiberglass.

The new research into health effects of fiberglass is now focused on exactly why the glass should be removed so easily from the body.

For a fibre to cause damage in the lung it needs to persist for many years. Fiberglass cannot persist and therefore cannot harm the lungs. Whilst it is wise not to expose oneself to a dust contaminated environment, fears of serious lung disease due to this insulation material are unfounded.