This is what I found off the internet
https://www.carewellurgentcare.com/2018/07/19/the-effects-too-much-screen-time-has-on-your-health/#:~:text=Cognitive imaging studies have found,lead less efficient information processing.&text=Studies have indicated that spending,and increases your mortality risk.
More screen time = more weight
As little as two hours of TV a day can increase the risk of weight gain, diabetes, and heart disease in adults. There are likely several factors to blame, including a sedentary lifestyle, less sleep, and generally bad eating habits when engrossed into a screen.
Looking at a screen for extended periods of time can cause “computer vision syndrome.” The symptoms: strained, dry eyes, blurred vision, and headaches.
Chronic neck and back pain
Poor posture when using screens combined with can cause chronic neck, shoulder, and back pain.
Studies link heavy computer and smartphone use to increased sleeping issues. The blue light from digital devices suppresses the sleep-promoting hormone melatonin, keeping us from having restful sleep.
Impaired cognitive function
Cognitive imaging studies have found that spending too much screen time will lead less efficient information processing.
You’re likely to die earlier
Studies have indicated that spending significant time with screens — whether it’s a TV, computer or tablet, lowers your cardiovascular health and increases your mortality risk.