Already in the 1970’s Russian researchers published animal studies on health effects from radiofrequency radiation in the frequency range that is currently for 5G use; mm waves. These studies were declassified by CIA in 2012 and are now available at internet.
A whole range of detrimental effects on the nervous system, different organs, hormones and the immune system were presented.
These results strengthen the warnings to implement the 5G system before adverse effects on humans and the environment have been investigated by researchers independent from industry.
Unfortunately these appeals seem to have had little or no effect, 5G has its own track, see www.5gappeal.eu and www.emfcall.org.