While most of us are aware of the physical side effects from too much screen time, including the impacts on vision, sleep, and weight gain from sitting down constantly, there hasn’t been many studies done to show the effects on mental health in adults.
A 2014 Nielsen report found that on average, adults spend 11 hours a day in front of screens. Is it possible that this may have an affect on mental health as well as physical health?
Studies have shown that too much screen time, especially at night affects sleep quality. One study was done on the effects of technology use on sleep at the University of Gothenburg, led by Dr. Sara Thomee. Thomee stated that the blue light emitted from screens suppresses melatonin production, preventing a restful night’s sleep. Melatonin is a hormone produced by the pineal gland which regulates sleep and essentially helps you wind down at the end of the day. A lack of good quality sleep is associated with anxiety and depression.
Anxiety can also be caused by the constant influx of information through social media and other forms of media. Too much negative news can become overwhelming, leading to depression or anxiety.
Dr. Graham Davey, a British psychologist stated that constant negative news and violent media exposure contributes to depression, anxiety, stress, and possibly post-traumatic stress disorder. Negative news can significantly change someone’s mood and increase personal worries. This may lead to more negative or aggressive interactions with the world, due to subconsciously focusing on negative and threatening events.
Another issue with overusing technology is addiction. Certain types of screen time can cause dopamine to be released, such as social media. Each time you received a new post reaction, reply or message certain parts of the brain are activated and you receive a hit of dopamine. Over time this may become additive.