from paper by Małgorzata Lewicka and Gabriela A. Henrykowska et all. LCD screen turned out to cause problems for health. His paper investigate correlation of electromagnetic radiation (EMR) from LCD Screen for human blood platelets.
Studies on the effect of electromagnetic radiation (EMR) already at the beginning of the 1960s, in the Soviet Union. This paper initiated by Asanowi and Rakov determined the effect of this factor on the health of workers staying close to a power transmission line and exposed to an electric field of the intensity up to 26 kV/m. They concluded that electric field can jamming autonomic and central nervous system. Another ones from effect in living organisms as well as on subjective ailments like fatigue, headache, dizziness, nausea, sleep disorder, loss of appetite, and irritation. All studies have same result of electromagnetic radiation from LCD effect not affected serious effect like die.
Malgorzata Lewica and Gabriela A investigate the effect of EMR emitted by LCD monitors with parameters of oxidative stress in human blood platelets.
read also difference of LED and LCD
oxidative Stress is imbalance of the pro-oxidant/antioxidant equilibrium, arises due to uncontrolled increase of reactive oxygen species (ROS) production and to the change of enzymatic activity of antioxidant defence proteins.
The aim of the study was to determine changes taking place in blood platelets under the effect of electromagnetic radiation generated by commonly used LCD monitors. This radiation is characterized by 1 kHz frequency and 150 V/m intensity at a distance of 30 cm from the monitor screen and 220 V/m at 15 cm. The tested sample was exposed to the electromagnetic field for 30 and 60 min. The following parameters of blood platelet oxygen metabolism were investigated: ROS concentration, enzymatic activity of superoxide dismutase (SOD-1), enzymatic activity of catalase, and concentration of malondialdehyde (MDA) – a marker of membrane lipid peroxidation.
Exposure condition setting and instruments
In a laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens (1 kHz, 150 V/m, 220 V/m), a ﬂat capacitor was the source of the electromagnetic ﬁeld (Figure 1). Requirements of the TCO (the Swedish Confederation of Professional Employees) and MPR (the National Board for Mea–