Low testosterone or Low-T can be caused by obesity, type 2 diabetes or other chronic medical conditions like liver or kidney disease. Testosterone naturally drops as a person gets older.
Those suffering from Low-T may experience changes in sexual desire, depression, insomnia, an increase in body fat and a worsening of conditions such as congestive heart failure and sleep apnea. As a man ages, testosterone levels fall by as much as one percent per year.
Once a blood test has determined a patient has low testosterone, testosterone therapy will begin. This can come in the form of gels, skin patches, pellets or injections.