Study shows no genetic damage in children of Chernobyl radiation survivors – The

A major international study has found that children born after the Chernobyl disaster show no additional DNA damage linked to their parents’ exposure to radiation. The scientists looked at people born from 1987 to 2002 whose parents helped clean up or stayed near the area.

Rather than more damage, the results point to stable patterns across generations.According to a report by BBC News, the results were published in the journal Science.

The research team conducted one of the most detailed genetic investigations since the nuclear accident in 1986. The project, headed by Meredith Yeager of the US National Cancer Institute, traced family units into which mothers, fathers and children gave away DNA.

Scientists compared these samples to identify any increase in mutations that could be directly linked to radiation exposure.The research focused on de novo mutations, which arise spontaneously in egg or sperm cells and are transmitted to children at conception. Scientists expect about 50 to 100 such mutations to occur in each generation. According to Dr. Stephen Chanock, who helped lead the work, they appear by chance. Through closer examination, researchers discovered signs linking more errors to parental contact with radiation.

However, their analysis revealed no such association.Years of studying the effects of radiation have shaped Professor Jerry Thomas’s view. At Imperial College London, she focuses on cancer associated with radiation exposure. Findings like these change the way we view permanent genetic risks. Rather than causing changes that are passed on to offspring, high radiation, when measured by daily background levels, leaves little effect on subsequent generations.Among those included in the study were families living near the disaster area, some of whom had children whose parents helped with the cleanup work. From Pripyat and neighboring villages, up to seventy kilometers away, people who had left their homes also joined. Scientists have turned to full DNA reading, which captures every part of a person’s genetic blueprint, making sure nothing is missed. With this tool, detecting small differences between parents and children is possible, even between siblings.What this means matters to society. Atomic events were followed by concerns about DNA damage, such as Hiroshima, Nagasaki, and later Fukushima. Because of this anxiety, some choose not to start families. According to Professor Thomas, strong data may now allay these concerns.Looking at the cancers associated with Chernobyl, scientists find familiar patterns. When it comes to thyroid tumors caused by drinking milk laced with radiation, they behave like normal tumors. Treatment follows standard pathways used elsewhere. Most patients respond well and survive for a long time afterwards.Even without signs of passed-on gene changes, people still face serious health problems right away. However, hope is growing from the new findings, alleviating concerns about permanent damage to DNA.