Never miss a story

Get subscribed to our newsletter


×

New York: The widespread belief that radiations from X-rays and CT scans can cause cancer has flaws and is based on an unproven theoretical model, suggests a study.

To estimate cancer risk from low-dose radiation, scientists used a model known as linear no-threshold (LNT) in the study published in the American Journal of Clinical Oncology.


But risk estimates based on this model “are only theoretical and, as yet, have never been conclusively demonstrated by empirical evidence”, wrote researcher James Welsh from the Loyola University in Chicago.

The use of the LNT model drives unfounded fears and “excessive expenditures on putative but unneeded and wasteful safety measures”, Welsh noted.

In the LNT model, the well-established cancer-causing effects of high doses of radiation are extended downward in a straight line to very low doses.

The model dissuades many physicians from using appropriate imaging techniques and “discourages many in the public from getting proper and needed imaging, all in the name of avoiding any radiation exposure”, the researcher explained.

This model assumes there is no safe dose of radiation, no matter how small.

However, the human body has evolved the ability to repair damage from low-dose radiation that naturally occurs in the environment.

Studies of atomic bomb survivors and other epidemiological studies of human populations have never conclusively demonstrated that low-dose radiation exposure can cause cancer, according to the study.

Any claim that low-dose radiation from medical imaging procedures is known to cause cancer “should be vigorously challenged, because it serves to alarm and perhaps harm, rather than educate”, the scientists suggested.

The LNT model “should finally and decisively be abandoned”, the authors concluded. (IANS)(Photo: www.continentalhospitals.com)


Popular

Photo found on Pixabay

Books on Delhi

The city of Delhi has seen it all; from sultanate rule, to dynasties, and to colonial rule. From monarchy to democracy, Delhi has gone through its phases. But, in order to know and explore the nuances of Delhi, you must read these beautiful books.

1. City of Djinns: A Year in Delhi by William Dalrymple

Keep Reading Show less
Photo by Viator.

Ghats of Varanasi, one of the oldest cities of India

There are some of the Indian cities which are older than time. Therefore, we must know which cities are they, and what has been their history!

1. Varanasi (1200 BC–)

Keep Reading Show less

Human hair wigs have several advantages over synthetic wigs

By- Digital Hub

I prefer synthetic wigs as it isn't something that I would wear all the time - just when I look different. Additionally, their ease of use is an essential factor for me. However, suppose you're looking to wear a wig for a fashionable accessory or as a way for you to show your personality. In that case, I'd recommend buying multiple synthetic wigs of various styles and colors instead of only the one human hair wig at the same amount. However, be cautious - only purchase top-quality synthetic braids that are more expensive as you might be disappointed by the new style you've chosen.

Keep reading... Show less