Frequent air travel has become a common aspect of modern life for many people, whether for business or leisure. While the convenience and speed of air travel is undeniable, some concerns have been raised about the potential health risks associated with prolonged exposure to radiation at high altitudes. One of the most significant concerns is the potential link between frequent air travel and an increased risk of cancer.
One of the main sources of radiation at high altitudes is cosmic radiation, which comes from sources such as solar flares and supernovae. Cosmic radiation can penetrate the Earth's atmosphere, and at high altitudes, such as those reached by commercial airplanes, the levels of cosmic radiation are higher than at sea level. This increased exposure to cosmic radiation can lead to an increased risk of cancer, particularly for those who travel frequently by air.
Research on the link between air travel and cancer risk has produced mixed results. Some studies have found that frequent air travelers have an increased risk of cancer, while others have found no significant association. However, a recent study conducted by the International Agency for Research on Cancer (IARC) found that aircrews have a higher risk of several types of cancer, including breast cancer and skin cancer, compared to the general population.
Another study conducted by the British Medical Journal suggests that frequent flyers are at a higher risk of developing cancer of the colon, lung, and breast, as well as melanoma, due to exposure to cosmic ionizing radiation at high altitudes.
It is important to note that the risk of cancer from air travel is relatively small, and the overall risk of developing cancer is influenced by a variety of factors, including genetics, lifestyle, and environmental exposures. However, frequent air travelers, particularly aircrews, may wish to take steps to reduce their exposure to cosmic radiation, such as using radiation-blocking products or limiting the amount of time spent at high altitudes.
In conclusion, while the link between frequent air travel and cancer risk is not entirely clear, there is some evidence to suggest that prolonged exposure to cosmic radiation at high altitudes may increase the risk of certain types of cancer. Frequent air travelers, particularly aircrews, may wish to take steps to reduce their exposure to cosmic radiation and to be aware of the potential health risks associated with frequent air travel. Dr. A. Arrazaghi. MD,FRCPC