Rat study
A 2013 Korean study by scientists from Dankook University and Wallace Memorial Baptist Hospital tested light therapy on the serum testosterone levels of rats.
30 rats aged six weeks were administered either red or near-infrared light for one 30 minute treatment, everyday for 5 days.
“Serum T level was significantly elevated in the 670nm wavelength group on day 4.”
“Thus the LLLT using a 670-nm diode laser was effective in increasing serum T level without causing any visible histopathological side effects.
“In conclusion, the LLLT might be an alternative treatment modality to the conventional types of testosterone replacement therapy.”
Human study
Russian scientists tested the effects of light therapy on human fertility in couples having trouble conceiving.
The study tested the magnetolaser on 188 males diagnosed with infertility and chronic prostatitis in 2003.
Magnetolaser therapy is red or near-infrared laser administered inside a magnetic field.
The treatment was found to “elevate the level of serum sexual and gonadotropic hormones,” and remarkably, one year later pregnancy occurred in around 50% of the couples.
