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DNA Mutations in ASTRONAUTS 🙄 😲 | Aakash Khurana All fourteen astronauts in the study, from NASA's space shuttle program, had DNA mutations in blood-forming stem cells, a Nature Communications Biology study Aug. 31 concluded. #nasa #nasaspaceappschallenge #research #science #knowledge #knowledgesharing Exposure to space radiation is one of the primary concerns for astronauts, and it can potentially lead to DNA mutations. Space radiation consists of high-energy particles from the sun, cosmic rays, and other sources outside Earth's atmosphere. These particles can penetrate the human body and interact with biological tissues, including DNA. Key points related to DNA mutations in astronauts: 1. Ionizing Radiation: Space radiation, particularly ionizing radiation, has enough energy to remove tightly bound electrons from atoms, leading to the formation of ions. This process can damage DNA by breaking the chemical bonds within the DNA strands. 2. Types of DNA Damage: Ionizing radiation can cause various types of DNA damage, including single-strand breaks, double-strand breaks, and base damage. Double-strand breaks are particularly problematic as they are more difficult to repair and can lead to mutations. 3. Repair Mechanisms: The human body has sophisticated DNA repair mechanisms to address damage caused by various factors, including radiation. However, the intensity and type of radiation encountered in space may overwhelm these repair mechanisms, leading to the accumulation of mutations. 4. Long-Term Effects: While short-term exposure to space radiation during a single space mission might not have severe consequences, long-term space travel, such as missions to Mars, raises concerns about cumulative exposure and potential long-term health effects, including an increased risk of cancer. 5. Research and Mitigation: Scientists and space agencies are actively researching ways to mitigate the impact of space radiation on astronauts. This includes developing shielding technologies, such as improved spacecraft materials, and understanding the biological effects of radiation exposure to implement better countermeasures. 6. Individual Variability: The susceptibility to radiation-induced DNA damage and mutations can vary among individuals due to genetic factors. Some astronauts may be more resilient to radiation, while others may be more susceptible. It's worth noting that space agencies, such as NASA, take extensive measures to monitor and mitigate the risks associated with space radiation. These efforts include ongoing research, improved spacecraft design, and the development of medical countermeasures to protect astronauts during space missions. Additionally, advancements in genetic and medical research contribute to a better understanding of the long-term effects of space travel on human health. For more info : https://lnkd.in/gxeJ8FYE
