Kuwo wonke umlando, ingqikithi yendoda iye yaxhunyaniswa nehomoni yakhe eyinhloko yesilisa i-testosterone. Lapho eseneminyaka engu-30, amazinga e-testosterone aqala ukwehla futhi lokhu kungase kubangele izinguquko eziningi ezimbi empilweni yakhe engokomzimba nokuphila kahle: ukuncipha kokusebenza kocansi, amazinga aphansi wamandla, ukuncipha kwemisipha kanye namafutha anda, phakathi kokunye.
Hlanganisa lokhu nokungcola okungapheli kwemvelo, ingcindezi kanye nokudla okungenamsoco okuvame kakhulu ezimpilweni zethu eziningi futhi akumangazi ukuthi sibona umqedazwe we-testosterone ephansi emadodeni emhlabeni jikelele.
Ngo-2013, iqembu labacwaningi baseKorea lafunda umthelela wokuchayeka kwe-testicularukukhanya kwe-laser okubomvu (670nm) kanye ne-infrared (808nm)..
Ososayensi bahlukanise amagundane abesilisa angama-30 aba amaqembu amathathu: iqembu lokulawula kanye namaqembu amabili abekwe obala ekukhanyeni okubomvu noma kwe-infrared. Ekupheleni kocwaningo lwezinsuku ezi-5 lapho amagundane echayeke ekwelashweni okukodwa okuyimizuzu engama-30 ngosuku, iqembu lokulawula alibonanga ukwanda kumazinga e-testosterone ne-testosterone kuwo womabili amagundane achayeke abomvu nangaphandle kwe-infrared atholakale ephakeme kakhulu:
“…Izinga leSerum T lenyuke kakhulu eqenjini le-808nm wavelength. Eqenjini le-wavelength engu-670 nm, izinga le-serum T nalo lenyuswe kakhulu amazinga e-testosterone ngamandla afanayo angama-360 J/cm2/ngosuku.”