![]() ![]() ![]() However, only a small number of study participants had malignant tumors. Another study found an association between cellphones and cancer of the salivary glands.In one study that followed more than 420,000 cellphone users over a 20-year period, researchers found no evidence of a link between cellphones and brain tumors.Instead, the subtle increases are more likely related to other factors - such as increased access to medical care and improvements in diagnostic imaging.
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