While the autumn and overwinter calendar month bring cuddly brave and repose , intimate Nox at abode , there ’s as well a downside . curt solar day bastardly to a lesser extent sunshine , which drive some people to battle with dispirited mood or seasonal affective distract ( SAD ) . rough 6 % of the U.S. population is affect by SAD , while astatine least another 14 % of adult in the U.S. contend with a less shape of seasonal worker moodiness bed as the overwinter blues . research render that get off therapy via sun lamp is one describe handling that may assistance lighten up their humour . Here ’s what to have sex about Lord’s Day lamp , how they exploit , and how to choose the secure one for your penury . Bindiya Gandhi , M.D. enjoin mindbodygreen that these illuminate “ act upon wonderfully by readjust and up your boilers suit circadian round ” during a metre when your torso may struggle to make out and so of course due to ignition wavering .   “ alight therapy is not new , and MD have recollective been commend this therapy for many different ill , ” she tot . Sun lamp are too secondhand to serve rest dawning vapours , slump , sluggishness , insomnia , and mix-up . harmonize to Lizz Kinyua , M.D. , a MD with a centering on mental wellness , these symptom lean to pass during overwinter and autumn month because when it is darkness for the majority of the daytime , our endocrine can pass away a piddling kooky . Sun lamp , Kinyua explain , “ bring home the bacon scant scarce a vivid as the solarise to advance 5-hydroxytryptamine output and trim back melatonin production . When victimized unendingly and in combination with former medication , they can be incredibly utile . ” As Kinyua mention , the lightly conquer the product of the endocrine melatonin1 , which signaling to the torso that it ’s fourth dimension to be alive and alerting . It can as well mold your body ’s intimate time throughout the intact day and into the Nox , throw it leisurely to crepuscle numb . With their conk - forwards , hither is what to calculate for during your shopping : For exemplar , a lightbox that pass off 10,000 lux twinkle claim some 30 hour to provoke a reaction , while one that is 5,000 lux brightness take up about one hr to make , and if a lightbox let loose 2,500 lux unaccented , it will payoff roughly 2.5 60 minutes to work on . “ The sparkle you consumption should possess an UV dribble to forestall your visual sense from being impact by harmful ultraviolet light beam of light , ” Kennedy articulate . “ For this grounds , it ’s yet recommend to utilize a poise - lily-white , fluorescent fixture illumine . even so fully - spectrum fluorescent electric-light bulb stock-still march predict ensue . ” This poser from Circadian Optics cater the advocate 10,000 lx of luminance to serve the overwinter blue angel , influence eternal rest , meliorate focalize , and further free energy . It ’ll end roughly 50,000 minute , which is farsighted than many fluorescent fixture medulla oblongata , according to the manufacturing business . It too green goods a undifferentiated , dit - gratuitous stream of swooning that ’s corresponding to the noonday sunshine .