NASA Hopes LED Lights will Cure Astronaut Insomnia
Sleep deprivation is no joke. It can cause lower performance, decreased memory, and even sickness. So, if you spend your life orbiting Earth on a $150B spacecraft, you're going to take sleep seriously. NASA, responding to an epidemic of insomnia, is ready to give the International Space Station (ISS) an LED makeover.
The cure? Living in the noisy, high-pressure ISS makes sleep difficult. The result: roughly half of all astronauts, at some point, take sleep medication. It's a quick fix, but it can cause dependency and inhibit astronauts' ability to wake up suddenly for an emergency. You don't want zombie-like astronauts, but you also don't want drug-addicted ones.
It's similar to an Earth-bound solution for the winter blues. Light therapy gizmos fight Seasonal Affective Disorder (SAD) by simulating daylight.
The bluish hue tricks the brain into suppressing sleep-inducing melatonin, and increasing energy-producing melanopsin. NASA hopes to apply the same principles. The system prepares the astronauts for better sleep, but its flexibility opens the door to smoother transitions of working hours.
Will the LEDs lead to better-rested, more focused ISS inhabitants? If so, the results would be difficult to measure, but likely plentiful. But if they fail and insomnia persists, you may hear more the next time NASA's budget is on the table.
"Using LED lights to cure astronaut incomnia was
an idea originated in the late 1980's"
- Gioia Massa, Project Scientist at NASA Kennedy Center