There are several negative effects of technology..
1. Isolation - We isolate ourselves by walking around in our own little world, listening to our iPods or staring at the screen of the latest mobile device even when we are around other people. Studies have shown that people who are socially isolated will live shorter lives.
2. Obesity - The more time people are spending engrossed in video games, talking to friends online and watching funny cat videos on YouTube, they are spending less time being active or exercising.
3. Poor Sleep Habits - Some of the negative effects of technology can be linked to the effect it has on sleep habits. We get sucked into online activities that keep us up too late and the constant stream of information can make it difficult to turn off our brains. Keeping technology out of the bedroom would be a very healthy habit to acquire.
4. Stress - Constantly being plugged in and connected causes an extra layer of stress that wasnt present before the overuse of technology.
5. Lack of Social Boundaries - Much in the same way that people over share on social media sites, there is an increasing tendency to cross social boundaries. Cyber stalking someone or sending unsolicited nude photos are examples of grossly crossing social boundaries.
6. Constant Distraction - When we are focused on a device instead of whats going on around us we miss a great deal. Think of the number of times you have been texting or talking to a friend and missed the opportunity to flirt with the hot guy standing beside you. There is also a rise in the number of injuries incurred by people texting while walking.