Topic: What are the effects of cell phone use on teenagers? Nowadays the cellphones bring many benefits, besides that it also brings harm to humans. There are three harmful effects why cellphones are harmful on teenagers. The first effect is about health. Some researchers in the world have shown that using the phone too long with close distance causes aging eyes and refractive errors such as nearsightedness. Besides, using the phone at night in the dark environment is cause of a lot of harm by dangerous light from the screen to attract highlevel attention of the eyes, easy fatigue, headache, sore eyes if you use it for a long time, it gradually can increase the risk of nearsightedness. In addition, a new research by scientists at the University of Washington (USA) has shown that using the phone at night not only causes serious damage to your sleep but also makes working efficiency reduce on the next day. Some previous researchers also showed light blue or light emitted from mobile phones can make you sleepless because they stimulate the body to produce melatonin chemical control of the biological clock body. Especially, phone waves can cause brain tumors or cancer in humans. The second effect is time.
Topic: What are the effects of cell phone use on teenagers? Nowadays the cellphones bring many benefits, besides that it also brings harm to humans There are three harmful effects why cell phones are harmful on teenagers The first effect is about health Some researchers in the world have shown that using the phone too long with close distance causes aging eyes and refractive errors such as nearsightedness Besides, using the phone at night in the dark environment is cause of a lot of harm by dangerous light from the screen to attract high-level attention of the eyes, easy fatigue, headache, sore eyes if you use it for a long time, it gradually can increase the risk of nearsightedness In addition, a new research by scientists at the University of Washington (USA) has shown that using the phone at night not only causes serious damage to your sleep but also makes working efficiency reduce on the next day Some previous researches also showed light blue or light emitted from mobile phones can make you sleepless because they stimulate the body to produce melatonin - chemical control of the biological clock body Especially, phone waves can cause brain tumors or cancer in humans The second effect is time Teenagers are attracted to the features of the phone such as texting, gaming, etc Nowadays, teenagers also spend all free time for cell phone For this reason they not care what is going on around themselves as family, friends or other activities This makes them more aloof and increase away with things happening around them The last effect is thought Along with the advancement of technology, today's phones are more and more applications to serve the needs of the entertainment such as watching movies, surfing the web and making friends with all over the world Hence, teenagers can be free to explore the curious as watching porn web sites and having a bad relationship with bad people That leads to thoughts and actions distorting their age After all, teenagers should not use cell phone early and use it in a healthy way to protect health and life better