Wi-Fi is an important threat to human health. https://pubmed.ncbi.nlm.nih.gov/29573716/
Read this published study on RF's which are the same waves your wifi, your cell phone AND your microwave emit. They are proven an important threat to your health.
Microwave frequency electromagnetic fields (EMFs) produce widespread neuropsychiatric effects including depression
Cell Phones interfere with glucose and carbohydrate metabolism, Since Cell Phones became mainstream, obesity greatly increased, Even animals have suffered this spike despite maintaining the same diets. A Study published in 2010 in the Proceedings of the Royal Society B had 11 coauthors from Alabama, Florida, Puerto Rico, Maryland, Wisconsin, North Carolina and California analyzed data on over 20,000 animals, 24 populations and 8 species, In all cases the animals weight increased over time, Chimpanzees were 29 times as likely to be obese in 2004 as they were in 1985. David B Allison, Professor of Biostatistics at the Univerdity of Alabama School of Public Health along with his colleagues challenged the tired old wisdom that human fatness due to a lack of exercise and poor diet and published the report "Canaries in the Coal Mine" https://royalsocietypublishing.org/doi/10.1098/rspb.2010.1890
A sudden spike in diabetes (31% in 1 year!) occurred in 1997, just after cell phones were introduced en masse in the U.S. Today, more than half of all adults have elevated levels of sugar in their blood. 180,000 had diabetes in 2000 worldwide, In 2014 it is estimated to be 387,000. Like diabetes, obesity has tracked exposure to electromagnetic fields. US statistics show that in 1960 1/4 of adults were overweight. This number did not change for 20 years. By 1991, an additional 14 million Americans were officially overweight. (The Invisible Rainbow, page 225).