Doctors have said that male menopause, which is being re-branded testosterone deficiency syndrome, and affects one in five men over 50, can be cured.
Male menopause sufferers can experience fatigue, depression, weight gain, clouded thought, loss of libido and memory and sleep disturbance caused by plunging levels of testosterone.
An international conference heard yesterday (CORR) that the decades-long fear that upping testosterone levels raises the odds of prostate cancer is a myth.
The study, which tracked the health for 15 years of almost 1,500 men treated at Dr Carruthers' Men's Health Centre in London's Harley Street, found this concern to be unfounded.
The men treated were no more likely to develop the cancer than other men and raising testosterone levels was found to help the prostate in other ways.
Dr Malcolm Curruthers, one of the study's authors from the University College London, said the misery of male menopause can easily be prevented and treated.
"Testosterone deficiency not only causes symptoms that can wreck lives and loves from as early as a man's 40s, it is linked to heart disease, diabetes and brittle bones," the Daily Mail quoted him as saying.
"Some people are even beginning to link it to Alzheimer's disease as well," he added.
Earlier this year, Robbie Williams, 37, shocked his legions of female fans by admitting he was injecting himself with testosterone to boost his sex drive.
Jabs can last up to six months and daily gels are also available. Some men claim to have the energy of someone 20 years younger after being prescribed male HRT but as few as 20,000 men are being treated.