During use of the handheld wireless phone, especially the smartphone, the thyroid gland is a target organ. During the 21st century, the incidence of thyroid cancer is increasing in many countries. We used the Swedish Cancer Register to study trends from 1970 to 2017.
During that time period, the incidence increased statistically significantly in women The increase was especially pronounced during 2010–2017. Increasing incidence was found also in men. Similar results were found for all Nordic countries based on NORDCAN.
These results are in agreement with recent results on increased thyroid cancer risk associated with the use of mobile phones. We postulate that RF radiation is a causative factor for the increasing thyroid cancer incidence.
This article is a follow-up to our previous publication on the same issue.
The results show that it is important to protect the thyroid gland from exposure to radiofrequency radiation from wireless phones, e.g. the smartphone. It should be used only for short calls always in the speaker mode or using handsfree.
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