Biological Plausibility

Biological plausibility is the idea that a proposed cause-and-effect relationship should make sense given what's known about how the body works. In evaluating whether asbestos causes a disease, scientists ask whether there's a believable biological mechanism connecting the exposure to the illness. It's one of the criteria used to judge causation.

Origin

Biological plausibility is one of the nine viewpoints Sir Austin Bradford Hill outlined in 1965 for assessing whether an association is causal. It draws on laboratory, animal, and mechanistic evidence to support epidemiological findings.

Significance in Asbestos Context

For your case, biological plausibility helps establish that asbestos can actually cause the disease you have, not just that the two are statistically linked. For mesothelioma and asbestosis, the mechanisms are well understood, asbestos fibers lodge in tissue, cause chronic inflammation, and damage DNA over time. Experts use this established biology to explain to a jury why your exposure is a credible cause. Defendants may contest plausibility for less-established links or for low exposure levels, so what experts can demonstrate about mechanism matters.

Example Sentence

The expert explained the biological plausibility of the claim, describing how inhaled fibers reach the pleura and trigger the changes that lead to mesothelioma.

Related Terms

Bradford Hill Criteria, Causation, Chronic Inflammation, Latency, Dose-Response, Mechanism of Disease

Notes

• Ask your legal team how experts will explain the biological mechanism linking your exposure to your diagnosis.
• Pathology and imaging that document fiber-related tissue changes support biological plausibility.
• For well-established asbestos diseases the mechanism is strong; expect the defense to focus on exposure level instead.