The cells of our body are frequently exposed to hazards that can cause them to be damaged, malfunction or die. Yet they have defence systems that can sometimes be strengthened by small doses of stress, a phenomenon known as hormesis. Scientists are investigating whether food compounds and medicines can harness these protective processes to benefit health.
The hazards of modern life are often discussed in terms of their potential to damage major organs. For example, air pollution can damage the lungs and contribute to asthma and other breathing disorders.
