If you have bipolar disorder, depression or trouble sleeping, it may help to wear amber-tinted glasses at night, new research suggests. These orange shades block blue light, which the body uses to adjust the biological clock to control sleeping and many other functions.
Blue light is a major component of sunlight, and exposure to it in the morning signals that it’s time to wake up and also helps reset the body’s clock, which is why morning sun is so important for adjusting to jet lag. Likewise, darkness following sundown serves as a cue to sleep. This worked well for our ancestors whose primary source of light was the sun. But many modern-day electronic devices like phones, computers and televisions also emit blue light, and being exposed to these after dusk can confuse the body, interrupting sleep. This, in turn, can worsen and increase the risk of developing various mental illnesses.