Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine

DDT

This chlorinated organic insecticide was discovered by Swiss chemist Paul Muller in 1939. DDT has been especially useful in controlling mosquitos that carry malaria, but some strains of the insects have become resistant to it. DDT has comparatively low acute toxicity in humans (it is thought to reason cancer), but it persists for a longtime in the environment and is disastrously toxic to birds, especially top-level predators such as hawks and eagles. The chemical interferes with the birds capacity to metabolise calcium, and thus affected birds that lay eggs with fatally thin shells. DDT has been banned in most countries, but it is still widely used on crops in Latin America.
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