Final answer:
There have been concerns over the potential health risks associated with microwave radiation from devices like cellphones and radar units. While a link was suggested by WHO in 2009, evidence remains inconclusive. Exposure to high levels of microwave radiation from devices like radar can indeed cause health issues, but typical domestic exposure like living near power lines or using a microwave oven is not definitively associated with increased health risks.
Step-by-step explanation:
The concerns about health risks from exposure to microwave radiation, such as from cellphones and other wireless communication devices, are ever-present due to their emission of non-ionizing electromagnetic waves. Although the World Health Organisation highlighted potential links between cellphone use and brain cancer in 2009, they still consider the evidence to be inconclusive. Additionally, while living near power lines has raised suspicions of various illnesses, studies have not shown a definitive risk for cancer due to exposure to such E-fields.
Radar units, which also emit microwaves, have been shown to cause health issues such as cataracts due to leakage of high levels of microwave radiation. It is important to stay at a safe distance from such sources to be within a safe exposure intensity. Studies generally agree that non-ionizing radiation, which includes IR, microwaves, and visible light, often does not present the same hazards as higher-frequency radiation. Nonetheless, at high intensities, these can still pose thermal risks or produce strong electric and magnetic fields that may have health implications.