Research Findings

Incidence Studies - All Cancers

Association of leisure-time physical activity and risk of 26 types of cancer in 1.44 million adults (2016)
 A pooled analysis of 1.44 million individuals from 12 U.S. and European cohort studies identified decreased risks of 13 different cancers in individuals with high compared to low levels of leisure-time physical activity. Risks were generally similar for overweight/obese and normal-weight individuals.
Cancer risks in U.S. radiologic technologists working with fluoroscopically guided interventional procedures, 1994-2008 (2016)
 In a study of 90,957 U.S. radiologic technologists, elevated risks were observed for brain cancer, breast cancer, and melanoma among technologists who performed fluoroscopically-guided interventional procedures compared to technologists who did not perform such procedures.
Cancer and circulatory disease risks in US radiologic technologists associated with performing procedures involving radionuclides (2015)
 Among U.S. radiologic technologists who completed the second and third study surveys, squamous cell carcinoma of the skin was increased with ever performing diagnostic radionuclide procedures, myocardial infarction and all-cause mortality were elevated with ever performing brachytherapy, and all-cause mortality, breast cancer, and myocardial infarction were increased with ever performing other radionuclide procedures (excluding brachytherapy and radioactive iodine); risks increased with increasing frequency performed, especially before 1980.
Childhood cancer in the offspring born in 1921-1984 to US radiologic technologists (2008)
 An evaluation of childhood cancer among 105,950 offspring born to radiologic technologists during 1921-1984 revealed no convincing evidence of increased risk with maternal or paternal preconception occupational radiation exposure or with maternal in utero occupational radiation exposure.
Cancer incidence in the U.S. Radiologic Technologists Health Study, 1983-1998. (2003)
 We compared the number of cancers among US radiologic technologists that occurred between 1983 and1998 to the number of cancers that we expected based on the general US population. Nearly all of the cancer sites examined showed risks about what would be expected in the general population. Some cancer types, such as lung, rectum and oral cavity cancers were significantly lower than expected in both male and female technologists. Some cancer types, such as breast cancer in women, and melanoma and thyroid cancer in both men and women, were slightly higher than expected. It may be that these elevated risks are related to occupation or it could be that radiologic technologists, who are more aware of the importance of screening for cancer than the general public and have better access to healthcare, tend to have these types of cancers detected earlier. This would cause the appearance of increased risk, but only because the general public might not be screened as often.
Cancer risks associated with employment as a radiological technologist (2002)