Do Walk-Through Metal Detectors Affect the Body?

Most public places like malls, cinema halls, supermarkets, etc. have metal detectors that we must pass through before entering the premises. These metal detectors are installed for safety reasons.
Let us know how these machines work and how they affect our health.

Functioning of metal detectors

Low-frequency and non-ionising electromagnetic fields form the basis of metal detectors. These fields are not like X-ray machines or imaging machines that use radiation. These fields require very little time, like a fraction of a second, to detect metallic objects. Hence, it is so simple to know if you are carrying any metallic objects when passing through the machine.

The health aspect

According to the World Health Organisation (WHO), circulating currents are induced in the body by low-frequency magnetic fields. The outside magnetic field determines the strength of the current, whether low or high. Relatively high currents can stimulate the nerves and muscles and may also affect other biological functions of the body.
According to the US Environmental Protection Agency (EPA), metal detectors do not damage DNA or tissues as they use non-ionising radiation.
According to the Health Physics Society, people who have pacemakers can pass through metal detectors safely.
The International Commission on Non-Ionising Radiation Protection (ICNIRP) has laid down certain guidelines for the limits of maximum exposure to the electromagnetic fields, thereby rendering the walk-through metal detectors harmless.
The Federal Communications Commission (FCC) has ensured further safety by regulating the electromagnetic emissions.

Other screening options

For those who are uncomfortable passing through metal detectors, there are other options for screening available.

Alternative screening methods, like a normal “pat-down” or hand-held wands
Regular calibration and maintenance of metal detectors
Security personnel who are informed about the safety protocols regarding vulnerable people who are undergoing screening.