Use of red light post-sunset reduces (but does not eliminate) disruption to your circadian rhythm This is because lacks melanopically active light in blue/green wavelengths The body has evolved over billions of years to be exquisitely sensitive to these wavelengths, which until late 1800s, always signalled daytime and triggered daytime-specific hormonal pathways ( like cortisol spiking for food hunting/gathering) As you might imagine, the problem becomes when we expose ourselves to artificial sources of blue/green light AT THE WRONG TIME and in an ALIEN FORM (energy saving LED bulbs: lack red/NIR, UV, flicker, etc) Downstream consequences of this artificial light lifestyle are circadian rhythm disruption and mitochondrial dysfunction...leading to every flavour of chronic disease Artificial light at night (ALAN) is the biggest health problem few are talking about View quoted note → View quoted note → Use of red light post-sunset reduces (but does not eliminate) disruption to your circadian rhythm This is because lacks melanopically active light in blue/green wavelengths The body has evolved over billions of years to be exquisitely sensitive to these wavelengths, which until late 1800s, always signalled daytime and triggered daytime-specific hormonal pathways ( like cortisol spiking for food hunting/gathering) As you might imagine, the problem becomes when we expose ourselves to artificial sources of blue/green light AT THE WRONG TIME and in an ALIEN FORM (energy saving LED bulbs: lack red/NIR, UV, flicker, etc) Downstream consequences of this artificial light lifestyle are circadian rhythm disruption and mitochondrial dysfunction...leading to every flavour of chronic disease Artificial light at night (ALAN) is the biggest health problem few are talking about View quoted note →