Lighting can have both physiological and psychological effects:
Physiological: It can influence our circadian rhythms, which regulate various bodily functions including sleep-wake cycles, hormone release, digestion, and body temperature. It can also impact vision, with insufficient or excessively bright light causing eye strain and other vision problems.
Psychological: It can affect mood, productivity, and overall wellbeing. Good lighting can enhance cognitive function, mood, and energy, while poor lighting can lead to stress, discomfort, and lower satisfaction with one’s environment.