LED light therapy has gained huge popularity in the last few years, with a plethora of machines, from high-end and super effective to low-end and practically useless and each of them employing different intensities and wavelengths. Blue, red, near infrared light, ~415nm, ~630nm and ~830nm, respectively, are proven to work by literally thousands of studies. However, for the yellow wavelengths (570-590nm) there is only a handful of studies…