Using an electric blanket all night and for many years was not linked to increased breast cancer risk, according to a study in the American Journal of Epidemiology.
In the study, 1,200 women took part, half of whom had breast cancer. In both groups, about 40% use blankets regularly. However, it was found that electric blankets did not appear to increase the risk of breast cancer, regardless of two crucial variables: age and duration of use.