The design of the study is fundamentally flawed, as well-documented by â€œCell Phones and Brain Tumor.â€ For example, users of cordless phones only were treated as unexposed. But, two independent studies found users of cordless phones had an increased risk of brain tumors. So, excluding such users underestimates the risk of brain tumors. This flaw suggests either ignorance or dishonesty on the part of the researchers running the Interphone Study. Then, thereâ€™s the suspicious finding from some parts of the Interphone Study which concluded the use of a cell phone for less than ten years lowers your risk of brain tumors. This suggests the bias was so strong it eliminated enough tumor risk to show decreased incidence. The Interphone studies did find more brain tumor risk after more than ten years of cell phone use. The report notes that the risk was so great it could not be camouflaged even by the bias of the study.
Emphasis added. The person who wrote that hasn’t heard of hormesis.