Addicting to the Internet can cause harm to your physical and mental health. The specific harm is as follows: 1. Being addicted to the Internet may cause vision loss, eye fatigue, and even nearsightedness. 2. Being addicted to the Internet may cause indigestion and affect your health. 3. Internet addiction may lead to social isolation, strong loneliness, and even depression. Addicting to the Internet may lead to a decline in learning ability and affect your studies. Below are some examples of people addicted to the Internet: In 2019, a 17-year-old boy in the UK dropped out of school because he was addicted to online games. His parents tried to force him to go to school, but in the end, they let him drop out. In 2018, a 13-year-old boy in the United States suffered from anxiety and depression due to his addiction to video games. His parents tried to treat him but failed. 3 In 2016, a 16-year-old boy in Japan lost his eyesight because he was addicted to online games. His parents tried to get him to quit the game but failed. Addicting to the Internet will cause harm to our physical and mental health. We should try our best to avoid being addicted to the Internet and maintain good living habits. We should participate in outdoor activities to maintain our physical and mental health.