Kuyo yonke imbali, ubume bendoda bunxulunyaniswa ne-testosterone yehomoni yayo yamadoda ephambili. Xa sele eneminyaka engama-30 ubudala, amanqanaba e-testosterone aqala ukwehla kwaye oku kunokubangela utshintsho oluninzi olubi kwimpilo yakhe yomzimba kunye nokuphila kakuhle: ukuncipha komsebenzi wesondo, amanqanaba aphantsi amandla, ukuncipha kwemisipha kunye nokwanda kwamafutha, phakathi kwezinye izinto.
Oku kukwabangela ungcoliseko olungapheliyo, uxinzelelo kunye nokutya okungenasondlo okuxhaphakileyo kubomi bethu kwaye akumangalisi ukuba sibona ubhubhane we-testosterone ephantsi kumadoda kwihlabathi liphela.
Ngowama-2013, iqela labaphandi baseKorea bafunde ngempembelelo yokuchayeka kumatyhalarhaisibane selaser esibomvu (670nm) kunye ne-infrared (808nm).
Izazinzulu zahlulahlula iimpuku ezingamaduna ezingama-30 zangamaqela amathathu: iqela lolawulo kunye namaqela amabini awayechatshazelwe kukukhanya okubomvu okanye kwe-infrared. Ekupheleni kovavanyo lweentsuku ezi-5 apho iimpuku zazichatshazelwe kunyango olunye lwemizuzu engama-30 ngosuku, iqela lolawulo alibonanga ukwanda kwamanqanaba e-testosterone kunye ne-testosterone kuzo zombini iimpuku ezazichatshazelwe kubomvu nakwi-infrared zafunyaniswa ziphezulu kakhulu:
“…Inqanaba le-T le-serum linyuswe kakhulu kwiqela le-808nm wavelength. Kwiqela le-670 nm wavelength, inqanaba le-T le-serum nalo linyuswe kakhulu amanqanaba e-testosterone ngamandla afanayo e-360 J/cm2/ngosuku.”