From the age of 30, testosterone levels decline an average of 2 – 3% per year due to decreased production of testosterone and increased proA major complaint in men with gradually decreasing testosterone is low sex drive, this is one of the many symptoms that mark the gradual decline of your body’s important hormones. Sex is an important part of life, and central to a healthy relationship, so low libido should never be ignored. In fact, relationships often suffer when one partner loses interest in sex. Commonly, hormone imbalance is the culprit of a man’s low sex drive, or the decline in the strength or quality of his erections.duction of the binding proteins that inactivate the hormone. The decrease can occur more rapidly due to environmental or genetic factors. This means that many men in their 40s, 50s, 60s and older are unnecessarily suffering from low testosterone symptoms. Many men begin to gain fat around the stomach and chest areas, while muscle is lost in the arms and legs. The usual exercise routine just doesn’t yield the same results; or worse, results in pain or injury. Energy levels, ambition, motivation, and interest in new challenges decline. Thinking becomes less clear, and intelligence can be affected. Insomnia is common. Men can become depressed, and after reading through all those symptoms, it’s easy to see why.