There is no charge for this service. Typically, fall and winter bring down feelings not explained by day to day experiences. Mood lifts with onset of spring or movement toward equator Because of the seasonal pattern and the fact that S.A.D. occurs more frequently in northern latitudes, it is thought to be caused by the body's reactions to reduced natural light. The mechanism mostly widely thought to be responsible is altered production or uptake of serotonin in the brain. Other possibilities include abnormally delayed circadian rhythms, or abnormal patterns of melatonin secretions.
Light therapy requires very bright light.
The light box used in the Student Counseling Center, produces 10,000-lux. This is approximately 20 times brighter than normal room lighting. Since light intensity drops off sharply with distance, it is best to sit near the light - about 23 inches away is optimal. Sit with your eyes open. Exposure to other skin areas will have little or no positive effect.