The discussion for the week includes the effects of light on health. Specifically, discuss what the textbook information revealed to you. Circadian rhythm has been studied for years. Many other light/health issues are in their infancy stage of research. For years I've worked with aging adults dealing with light and the aging eye. Today, as an "aging" person/consumer (!) Yellowing of all color and glare have created increasing frustration for me. Direct your discussion to observations/personal incidents that relate to health/light. SAD – Seasonal Affective Disorder – Vitamin D – Daylight Savings/circadian rhythm disruption.