For example According to Medlineplus
Too much screen time can:Make it hard for your child to sleep at night
Raise your child's risk of attention problems, anxiety, and depression
Raise your child's risk of gaining too much weight (obesity) (Screen time and children)With this in mind it very obvious that if a child is in front of a screen for hours and hours at a time it can be very lethal. All three of the of the reasons up top could escalate into something much more worse if it keeps continuing.For instance Victoria L. Dunckley, M.D., the author of Reset Your Child's Brain(link is external), is an award-winning integrative child psychiatrist who specializes in children with complex or treatment-resistant mental health conditions states, As a practitioner, I observe that many of the children I see suffer from sensory overload, lack of restorative sleep, and a hyper aroused nervous system, regardless of diagnosis—what I call electronic screen syndrome. These children are impulsive, moody, and can’t pay attention... (Dunckley).Because of screen time mental health is attacked leading to who knows where sending suicidal,murderous and brutal thoughts to a young child's brain.Consequently more time in front of a screen can negatively affect your health probably leading off with some illness small and over time without doing anything about the screen time people are using the illness that started off small would have escalated to something much