“The Relationship Between RF EMF Radiation from Cell Phones and Brain Tumor: The Brain Tumor Incidence Trends in South Korea,” Environmental Research, March 10, 2023. Is that all attributable to better detection or might RF radiation from wireless phones play a part?
Rates in the U.S. are going up too, though not as steeply. More about this from Joel Moskowitz of Berkeley Public Health.
https://microwavenews.com/papers/brain-tumor-incidence-trends-s-korea