Malignant mesothelioma is most often caused by asbestos exposure and is rarely inherited through families. Your risk is low unless you have been significantly exposed to asbestos. To reduce your risk, avoid contact with asbestos, follow workplace safety rules, and have regular medical check-ups. There is no standard screening test, but if you have a history of asbestos exposure, your doctor may recommend imaging or lung function tests. Early detection is difficult, so minimising exposure is the most effective way to protect yourself.