Scientists have found no link between cell phone use and brain cancer. This is reported by HealthDay. At the request of the World Health Organization (WHO), scientists analyzed five thousand studies published between 1994 and 2022. They tried to determine whether exposure to radio frequencies from wireless electronics (including cell phones) could increase the chances of developing brain cancer. The authors focused on 63 studies. They found no increase in risk, even with long-term (10 years or more) or frequent cell phone use. Also, the amount of time the phone was held near the head had no effect. There was no increase in the risk of leukemia or childhood tumors either. Concerns about cell phone use first arose in 2011 when the WHO International Agency for Research on Cancer classified exposure to radio waves as a possible carcinogen for humans. That decision was based on limited data. Since then, many more studies have been published, prompting the WHO to order a new review. Scientists have noted that 3G and 4G networks produce significantly less RF radiation than older networks. There are no serious studies of 5G networks yet, but no link to cancer has been shown for radar with similar frequencies. In addition, the increasing number of cell towers reduces the amount of radiation emitted by cell phones because it becomes easier for them to catch the signal.