Electromagnetic Fields
From The Brainfog Wiki
An Electromagnetic Field (EMF) is a physics’ element, it’s a wave of energy (a radiation) that moves at the speed of light.
Visible light is one form of EMF, X-Rays and Gamma-Rays are both EMFs, Wi-Fi technology, Bluetooth and Cellular Phone communication, all use Electromagnetic waves to send wireless information.
Man-made EMFs (e.g. Wi-Fi), can cause brain fog in sensitive individuals.