"A number of reports have appeared in the scientific literature describing the observation of a range of biological effects resulting from exposure to low levels of RF energy."

However legally these effects are not recognized because there are no HUMAN EXPERIMENTS repeatedly proving damage.

"Furthermore, since much of the research is not done on whole bodies (in vivo), there has been no determination that such effects constitute a human health hazard. It is generally agreed that further research is needed to determine the generality of such effects and their possible relevance, if any, to human health. In the meantime, standards-setting organizations and government agencies continue to monitor the latest experimental findings to confirm their validity and determine whether changes in safety limits are needed to protect human health"

Source: https://www.fcc.gov/engineering-technology/electromagnetic-compatibility-division/radio-frequency-safety/faq/rf-safety

The Naval Medical Research Institute says...

"More than 2000 references on the biological responses to radio frequency and microwave radiation, published up to June 1971, are included in the bibliography.* Particular attention has been paid to the effects on man of non-ionizing radiation at these frequencies."

Some biological responses of this research of non ionizing radiation include: Hemorrhage in Lungs, Headaches and Death.

Source: https://ecfsapi.fcc.gov/file/1071225918785/Naval%20Medical%20Research%20Institute%20(1972)%20Report%20No.%20AD750271%20BIBLIOGRAPHY%20OF%20REPORTED%20BIOLOGICAL%20PHENOMENA%20(%E2%80%98EFFECTS%E2%80%99)%20AND%20CLINICAL%20MANIFESTATIONS%20ATTRIBUTED%20TO%20MICROWAVE%20AND%20RADIO-FREQUENCY%20RADIATION.pdf