Do infrared thermometers emit radiation that is harmful to infants?
May 10, 2023
Source: Cainiu Health
Dr. Ma Yan
Introduction
In general, infrared thermometers do not emit radiation harmful to infants. They typically work by using a sensor to detect the frequency of infrared radiation emitted from the infant's forehead, converting the infrared signals into electrical signals, and then transforming them into temperature readings. The human body naturally emits infrared radiation. During use, measurements are taken from a distance of 2 to 3 centimeters away from the forehead, without direct contact with the skin surface, so they do not expose infants to radiation.
Generally, infrared thermometers do not emit harmful radiation toward infants, so there is no need for excessive concern. The detailed explanation is as follows:
Infrared thermometers typically work by using a sensor to detect the frequency of infrared radiation emitted from the infant's forehead. This infrared signal is then converted into an electrical signal and finally displayed as a body temperature reading. Since the human body naturally emits infrared radiation, using an infrared thermometer generally has minimal impact on health. Although the thermometer itself may involve some level of radiation, during use it is usually held 2 to 3 centimeters (not meters) away from the forehead—not in direct contact with the skin—so it does not expose the infant to harmful radiation.
The readings from infrared thermometers can be influenced by environmental factors such as ambient temperature, humidity, and air flow, which may cause variations in measurements. It is therefore recommended to take multiple readings to avoid misdiagnosis.
