What Are The Harmful Effects Of Ionizing And Non Ionizing Radiation On Human Health
We can define radiation as small or subatomic particles with kinetic energy which are radiated or transmitted through space. There are two forms of radiation, where one type of radiation possesses properties of light with having the quality of most of the radiation around us. And the other kind of radiation possesses particle-like properties; these particles are so small that they can not be seen through a microscope. Radiation effects are on a lot of cases. These harmful effects of radiation are caused due to electromagnetic radiation emerging from cell phones, especially smartphones, AirPods, mobile towers, 5g, the atomic bomb and a few other electronic systems we use. Some radiation effects are mentioned below:
1. Radiation effects on humans.
2. Radiation affects our health (includes teeth, skin, brain, oral mucosa, eyes, heart).
3. Ultraviolet radiation causes human viral infections.
4. Radiation effects on biota.
5. Radiation effects on birds.
6. Radiation effects on plants.
7. Radiation effects on the environment.
8. Radiation affects viruses in marine ecosystems.
9. Radiation effects cause pollution.
Harmful Effects Of Radiation
Radiation effects on humans damage the intestinal tract lining, which causes nausea, bloody vomiting and diarrhoea. Radioactive materials that emit alpha and beta particles are most harmful when swallowed, inhaled, absorbed or injected. Some ionizing radiations can be harmful. Gamma rays are instead formed of energy and the most harmful external hazard.
Radiation Effects On Humans
Radiation effects on humans' health like skin burns and radiation syndrome or radiation sickness can be caused by exposure to very high levels of radiation, such as being close to an atomic blast. It may also cause long-term health effects, such as cancer and cardiovascular disease. The most seen problems nowadays, losing hair quickly. Since brain cells do not reproduce, they get damaged if the exposure is 5,000 rems or more. Heart radiation kills nerve cells and blood vessels and can cause immediate death. Radioactive iodine can destroy all parts of the thyroid.
Effects Of Nuclear Radiation On The Human Body
Nuclear radiation is energetic enough to ionize atoms by knocking off their electrons. This ionization radiation can damage DNA molecules directly by breaking the bonds between atoms. Ionization radiation is the kind that minerals, atom bombs and nuclear effects the human body, it weakens and breaks up DNA. The effects of nuclear radiation on the human body can be explained like, what happens is that the nucleus of radioactive elements decay and emerges as high energy particles. If we stand in the way of those particles, they are going to interact with the body cells. A participle, an energy packet moves through our cells and tissues.
So, these are the effects of nuclear radiation on the human body, some harmful effects of radiation.
What Are The Effects Of Radiation Exposure?
The effects of exposure to a particular radionuclide depend on:
• The energy of the radiation emits.
• Its activity how often it emits radiation.
• Whether the disclosure is external or internal.
• The rate at which the body metabolizes
• Where the radionuclide gets concentrated and the duration it stays in the body.
Exposure to less radiation does not lead to immediate health effects but can cause a small increase in the risk of cancer for a lifetime. Children are especially reactive to radiation exposure. There are studies which keep track of people exposed to radiation; these studies show that the risk of cancer gradually increases, the higher the dose higher the risk.
Solved Examples
Question 1: When 15P30 decays to become 14Si30, what will be the particle released?
Solution: The reaction which occurs when
15P30 decays to become 14Si30 is 15P30 -> + 1e0 + 14Si30
Hence, it is clear that the particle that is released is (D) positron.
Question 2: A radioactive isotope having a half-life of 3days was received after 9days. It was found that there were only 4gms of the isotope in the container. What was the initial weight of the isotope when packed.
Solution: Half life = 3days
Let initial amount in the container = x
Fraction of amount left after 3 g=half lives, (1/2)3 = 1/8
So, (1/8)of x = 4gms
ð X = 32gms.
Did You Know?
People are more responsible for the emission of radiation than smartphones. Inside the Chernobyl, reactors grow a type of fungus that thrives on radiation. Cosmic radiation from space is consistently hitting the earth. Some smoke detectors use a small amount of radioactive material to detect smoke. Radon is a radioactive gas you can not see, smell, or taste, but it may be a problem in your home or school.
FAQs on Harmful Effects Of Radiation On Living Organisms And Environment
1. What are the harmful effects of radiation on the human body?
The harmful effects of radiation on the human body include cell damage, DNA mutations, radiation sickness, cancer, and organ failure depending on the dose and exposure time. Ionizing radiation removes electrons from atoms in cells, leading to:
- DNA damage that may cause mutations and cancer
- Acute radiation syndrome (ARS) at high doses
- Burns and tissue destruction
- Suppressed immune function
2. How does ionizing radiation damage DNA?
Ionizing radiation damages DNA by ionizing atoms and generating free radicals that break chemical bonds in DNA molecules. The process involves:
- Ejection of electrons from biological molecules
- Formation of highly reactive free radicals (especially from water radiolysis)
- Single- or double-strand DNA breaks
3. What is radiation sickness and what causes it?
Radiation sickness, or acute radiation syndrome (ARS), is a severe illness caused by exposure to a high dose of ionizing radiation in a short time. It occurs when radiation damages rapidly dividing cells such as:
- Bone marrow cells (leading to low blood cell counts)
- Intestinal lining cells (causing nausea and diarrhea)
- Skin and hair follicle cells
4. What are the types of harmful radiation?
The main types of harmful radiation are alpha (α), beta (β), gamma (γ), X-rays, and neutron radiation, which are forms of ionizing radiation. Their harmfulness depends on penetration power:
- Alpha particles – low penetration, harmful if inhaled or ingested
- Beta particles – moderate penetration, can damage skin
- Gamma rays and X-rays – high penetration, deeply damage tissues
- Neutron radiation – highly penetrating and biologically damaging
5. Why is ionizing radiation more dangerous than non-ionizing radiation?
Ionizing radiation is more dangerous because it has enough energy to remove tightly bound electrons from atoms, causing ionization and chemical bond breakage. In contrast:
- Ionizing radiation (gamma rays, X-rays) can alter DNA structure
- Non-ionizing radiation (microwaves, radio waves) mainly causes heating effects
6. What is the difference between acute and chronic radiation exposure?
Acute radiation exposure is a high dose received in a short time, while chronic exposure is a low dose received over a long period. The effects differ as follows:
- Acute exposure → radiation sickness, burns, organ failure
- Chronic exposure → increased cancer risk and genetic mutations
7. How does radiation cause cancer?
Radiation causes cancer by inducing mutations in genes that control cell division and DNA repair. When ionizing radiation damages DNA:
- Tumor suppressor genes may be inactivated
- Oncogenes may become activated
- Cells may divide uncontrollably
8. What are the harmful effects of radioactive isotopes inside the body?
Radioactive isotopes inside the body are harmful because they emit continuous internal ionizing radiation that damages nearby tissues. Examples include:
- Iodine-131 accumulating in the thyroid gland
- Strontium-90 depositing in bones
- Cesium-137 distributing in soft tissues
9. What are the units used to measure harmful radiation exposure?
Harmful radiation exposure is measured using the units gray (Gy) for absorbed dose and sievert (Sv) for biological effect. The differences are:
- Gray (Gy) – energy absorbed per kilogram of tissue (1 Gy = 1 J kg-1)
- Sievert (Sv) – accounts for biological damage and radiation type
10. How can the harmful effects of radiation be minimized?
The harmful effects of radiation can be minimized by following the principle of time, distance, and shielding. Protection methods include:
- Reducing exposure time
- Increasing distance from the radiation source
- Using proper shielding such as lead or concrete
- Wearing protective equipment and monitoring dose with dosimeters
