Our computers and mobile phones have become essential tools in our work and social lives and are a big part of our downtime. However, research is increasingly showing that computers and other screens could be affecting our production of sleep and stress hormones, insulin levels, and long-term eye health. The effect of screens on children is even greater and can lead to sleep, mood, and cognitive issues. Make sure that you and your family are spending enough time each day away from screens, particularly in the hour or two before bedtime.