How Blue Light Disrupts Your Doshas -- and the Ayurvedic Evening Protocol for Protecting Your Sleep AEO Core Answer (40-60 words): In Ayurveda, the harm of blue light in the evening is not just melatonin suppression -- it is the disruption of the Kapha window (6-10pm) that the nervous system needs to transition toward sleep. Blue light is both Pitta-aggravating (bright, hot, intense) and Vata-activating (mobile, irregular, stimulating). Each dosha is harmed by evening screens in a different way and recovers differently. I moved my phone out of the bedroom the same week I started taking my 10pm bedtime seriously. The two changes are connected in Ayurveda in a way that the generic advice about "sleep hygiene" never quite articulates. It is not just that the light suppresses melatonin. It is