You might want to switch off your Wifi connection after reading this. A recent paper[1] aggregating more than 20 studies found that repeated Wifi exposure could put you at physical and mental risk. These risks include: cellular death known as apoptosis; oxidative stress, which causes chronic disease like cancer; testes and sperm dysfunction; neuropsychiatric and psychological issues; negative impacts to cellular DNA; hormonal changes; and a rise in inflammatory calcium.