Dictionary > Radiobiology


A field of science that studies the biological effects of ionizing radiation
Radiobiology (also called radiation biology) is a field of science concerned with the effects of ionizing radiation on organisms. Ionizing radiation is radiation in which an individual particle (for example, photon, electron, or helium nucleus) carries energy capable of displacing electrons from atoms or molecules, thereby producing ions. Alpha and beta particles, as well as gamma and x-rays, are all examples of ionizing radiation. Exposure to ionizing radiation may be harmful and sometimes lethal to organisms. For instance, it may cause burns and acute radiation syndrome (i.e. a condition characterized by cellular degradation due to damage to DNA). Some of the effects of ionizing radiation may be stochastic, i.e. the risk may increase as the dose of radiation increases. It may lead to teratogenesis, heart disease, and cognitive decline.
Nevertheless, ionizing radiation may also be applied for therapeutic purposes (i.e. radiation therapy). It is now used to treat certain cancers and thyrotoxicosis (a condition where there is an excessive thyroid hormone).
Radiobiology includes these topics for research. It aims to develop therapeutic effects as well as detrimental effects of ionizing radiation.
Also called:

  • Radiation biology

See also:

  • ionizing radiation

    You will also like...

    human brain structure
    The Conscious & Unconscious Nervous System

    This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

    Pink Lotus plant on a pond
    Freshwater Lentic Communities & Animals

    This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..

    Lentic community
    Freshwater Communities & Lentic Waters

    Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

    Physiological Homeostasis
    Physiological Homeostasis

    Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..

    Kidneys and Regulation of Water and Inorganic Ions

    The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..