Senior living homes are meant to provide elderly citizens with excellent assistance, surrounded by similar individuals, in a healthy environment. Some accomplish this, but one crucial element is often overlooked in putting together successful senior living communities. Lighting plays a larger role in the health of seniors than most know. Circadian rhythms are the biological patterns that occur during a 24-hour cycle. These play a vital role in health and wellness, and lack of the correct type of lighting can negatively affect these rhythms leading to disrupted sleep patterns which have been linked to depression, seasonal affective disorder, and an increased risk of cancer and type 2 diabetes. The problem is caused by a lack of exposure to bright light. Communities generally keep their lighting levels low which corresponds more with the yellowish/white “visual light” end of the spectrum instead of a balance between that and the bluish “circadian light” end of the spectrum. Adding to the problem, as humans age, the pupil area of the eye decreases and the lens begins to yellow, filtering blue light and further reducing circadian photoreception.