A cikin tarihi, an danganta asalin mutum zuwa farkon hormone testosterone. A kusan shekaru 30, matakan testosterone sun fara raguwa kuma wannan zai iya haifar da wasu canje-canje mara kyau ga lafiyar jiki da jin dadi: rage yawan aikin jima'i, ƙananan matakan makamashi, rage yawan ƙwayar tsoka da ƙara yawan mai, da sauransu.
Haɗa wannan tare da gurɓataccen muhalli mara iyaka, damuwa da rashin abinci mai gina jiki wanda ya zama ruwan dare a yawancin rayuwarmu kuma ba abin mamaki bane cewa muna ganin annobar ƙarancin testosterone a cikin maza a duniya.
A cikin 2013, ƙungiyar masu bincike na Koriya sun yi nazari kan tasirin bayyanar cututtukaja (670nm) da infrared (808nm) hasken Laser.
Masanan kimiyya sun raba mazaje 30 zuwa rukuni uku: rukunin kulawa da ƙungiyoyi biyu waɗanda aka fallasa su ga hasken ja ko infrared. A ƙarshen gwajin kwanaki 5 inda aka nuna berayen zuwa jiyya na minti 30 a rana, ƙungiyar kulawa ba ta ga karuwa a cikin matakan testosterone da testosterone ba a cikin berayen ja da infrared da aka fallasa sun sami haɓaka sosai:
“…Matakin T ɗin ya ƙaru sosai a cikin rukunin tsawon zangon 808nm. A cikin rukunin tsayin tsayin nm na 670, matakin T ɗin kuma ya ƙara haɓaka matakan testosterone a daidai ƙarfin 360 J / cm2 / rana.