A new Italian study has found that standing in front of a light regularly boosts men’s testosterone levels and allows them to enjoy greater sexual satisfaction.
This study focused more on men over 40 as one in four of this age group seem to report problems with sexual desire, according to the Daily Mail.
The Italian researchers analysed data of 38 men with one of two conditions characterised by a lack of interest in sex – hypoactive sexual desire disorder or sexual arousal disorder.
The researchers first established the participants’ testosterone levels and interest in sex and then put them in two groups.
The other group received regular treatment with a 10 000 lux exposure, equivalent to a bright day light, while the other group was exposed to 100 lux which is the amount of light on a very dark overcast day.
For two weeks, both groups had to use the light box for about 30 minutes every day between 7am and 8am.
The group who was exposed to lower light reported no significant change while those who were exposed to bright light reported sexual satisfaction levels three times higher than before the treatment.
Professor Andrea Fagiolini, who conducted the study with colleagues at the University of Siena, said: “Before treatment, both groups averaged a sexual satisfaction score of around two out of ten, but after treatment the group exposed to the bright light was scoring around 6.3 – a more than three-fold increase.”
"In contrast, the control group only showed an average score of around 2.7 after treatment."
Professor Fagiolini told the European College of Neuropsychopharmacology’s annual congress in Vienna: ‘The increased levels of testosterone explain the greater sexual satisfaction.’
He also said that light therapy might work by inhibiting the pineal gland in the brain to increase testosterone production, adding that ‘there are probably other hormonal effects’.
Vienna said although it could not be recommended for clinical use yet, it does however offer a way forward.
The researcher noted that there are several possible reasons for lack of sexual desire and treatment depends on the underlying cause.