I don't have shrinkage but I do have low testosterone and my urologist has put me on testosterone replacement therapy. Says it comes with age and is one of the symptoms of male menopause.
These are some of the common sysmptoms of male menopause, which can begin when a guy is in his 40s. I have all the symptoms except the last two.
Getting old can be a bitch.
• Declining sex drive (libido) - not only does the man have less interest in sex, he will also have sex less frequently. From an average of 3-4 times a week in his twenties, sexual frequency declines to once a week or so in his fifties to 1-2 times a month in his late seventies. A related symptom is that sex becomes less enjoyable for the man.
• Fatigue, lessening energy - once able to be on the go all day into the night, now the activity pace slows considerably. The same physical activity takes longer with considerably more effort.
• Forgetfulness, declining ability to concentrate - although anyone can occasionally forget, there's a noticable change in the ability to remember in male menopause. And it becomes more difficult to focus, which ordinarily is one of the male strengths.
• Feelings of anger, anxiety, irritability, depression - events or actions of others that once were dealt with easily by the male now become more difficult to deal with, another of the male menopause symptoms.
• Weight gain - this increase in body fat and body weight is accompanied in male menopause with a loss of muscle mass. Start with this fact - a male that is sedentary will lose about 10% of his muscle each decade. The fat that is gained tends to accumulate around the man's middle section, another of the male menopause symptoms. Obesity, of course, is related to numerous health problems.
• Sleep difficulties - sleep, especially uninterupted deep sleep, is the time when the body repairs itself and gets ready for another trip through the next day. One of the male menopause symptoms is having difficulty in falling asleep, not sleeping well and having a restless time during the last part of sleep before awakening. Not getting enough quality sleep over time can have serious health consequences.
• Osteoporosis - even though a male begins to lose bone mass considerably later in life than a woman on the average, bone loss will happen and can be considered another symptom of male menopause. Women often begin losing bone mass as early as in their thirties, whereas bone loss begins later in life for a man.
• Confusion, indecisiveness, declining self-confidence - part of being a healthy male is the ability to solve problems, to be efficient, to be competent, to have power and to achieve. A consequence of experiencing male menopause symptoms is the erosion of these crucial aspects of being a man.