Poor lighting can cause eye fatigue and headaches, which make us feel depressed or ill in the space constantly.
Poor natural lighting can trigger depression and actually has a negative effect on our immune systems.
Bright lighting stimulates our mind (which is why its great for task illumination) whilst dim illumination quiets our senses and can actually make us feel drowsy (which is why its great for the bedroom).
Dim lighting and harsh contrast can cause us to strain our eyes when being used in place of task illumination.
Excessive artificial lighting can cause rooms to appear overly bright, which actually hurts our eyes and can cause us to feel nervous and on edge in the space.
Insufficient lighting can cause us to suffer emotional stress and even physical illness if we are exposed for long periods of time.
Natural lighting through windows and skylights has calming effects on our minds and emotions.
Uncovered globes can actually cause irritation (to both our eyes and our mood), as well as disturbing the harmony of the space.
As you can see, too much artificial lighting or illumination that is insufficient for the task at hand can cause some serious side effects. When choosing lighting for the different areas of your home, you need to choose carefully, as it will have an impact on your emotional and physical health use globes that simulate daylight wherever possible, use shades over globes wherever possible, and never use dim fixtures where tasks are regularly completed (such as the kitchen).
By carefully selecting each and every lighting solution for your home or workplace, you could even improve the moods of the people who frequently use those spaces. Noticed that your employees appear to be overly stressed? Utilize more natural lighting in the workplace to boost their happiness and relaxation. Noticed that your kids are complaining that their eyes hurt? Utilize lampshades to protect their little eyes from the harsh glow of task lighting. In this way, your space will affect your mood and emotions in a more positive way.