Their color spectrum delivery is unbalanced. This type of lighting is generally the worst, because the quality of the bulbs is so poor and extremely skewed on the color rendering scale. Most people think it is the fact that they are fluorescent, but it is actually the poor quality of the light produced. The Language of The Brain Light is a nutrient, much like food. The light we take in through the optic path has direct effect on the endocrine, nervous and immune systems.
Light sends messages to the brain and balances out circadian rhythm.
Without high quality light, the messages are garbled, incomplete and ultimately stressful to the entire system. In the work place, natural lighting and full spectrum artificial light has been proven to increase productivity, reduce sick time, improve the general feeling of well-being and give a more normal and natural rendering of color to art, furnishings and interiors. Quality light can make a big difference in your general mood and reduce eyestrain considerably. Therefore, the more outside and natural light you can get, the better. Artificial light that has a balanced spectrum provides a light source that is more beneficial to the body.