Where low testosterone is a cause of gynaecomastia, it can affect men in different ways depending on their age. In young men and boys it can cause late onset of puberty or not occurring at all. In adult men it can have a negative effect on libido, reproduction capability and general well being. Common symptoms include:
Muscle weakness
Tiredness
Lethargy
Increased body fat
Lipid disorders
Anaemia
Insulin resistance
Erectile dysfunction (impotence)
Loss of libido (sex drive)
Decreased shaving frequency
Hot/cold flushes
Sweating
Loss of body and facial and pubic hair
Smooth, fine, wrinkly skin
Shrinking testicles
Osteoporosis
AND Depression.
Men who have low testosterone can have one,some or all of the above.
I factually know of men who have had gynecomastia and depression and NO other obvious symptoms of low testosterone.
Just like I know of men who with low testosterone whose only symptoms has been poor concentartion and fatigue.
You have implied that Depression is only something that indicates testosterone deficiency in the presence of the above ailments. Whilst it is common to have a variety of the above, like I say sufferers rarely have all of the above and are often in a grey zone where only one or two symptoms are prominent.
I can show you many men who have been incorrectly given anti depressants for years before it was discovered that they had testosterone deficiency. Once the latter was treated many of these men no longer needed anti depressants.
If you want infomation on the above I can gladly provide it.
This is another reason that highlights the need for endocrine/pathology testing of all men with gyencomastia.
But that only applies to men defined as having low testosterone (below 12nmol/L but this figure varies from country to country)
This is simplistic and utterly wrong!!!
Your statement is at odds with ALL the modern thinking on testosterone deficiency. It is at odds with both eminent experts that I have stated and it is at odds with the AACE (American Association of Clinical Endocrinologists) and there guidelines on hypogonadism and it is at odds with almost every single endocrine body in the world.
The reality is detailed by Dr Eugene Shippen in his book The Testosterone Syndrome and is also explained to a lesser extent on The Testosterone Deficiency Center patient support group below
I know these FACTS as I have been involved with and speaking to men with low testosterone across the world with support groups in differing countries for over two years.
I can also speak from the experience of having read all the relevant new thinking and information on the subject matter including all the books written by Dr Eugene Shippen and Dr Malcolm Carruthers (two prominent world authorities on the subject matter).
I have personally met and spoken with many world leading authorities on the subject including the two mentioned and I also am a man with low testosterone and osteoporosis as a result of low term undiagnosed testosterone deficiency (I would not have osteoporosis if correct testing was put in place 13 years prior).
http://www.androids.org.uk/A serum testosterone level alone is of little diagnostic use and in any event many men have been shown to have testosterone deficiency with levels way above the level you have stated (which is taken from outdated information).
I concur with the rest of your post relating to depression, just not that which relates to testosterone deficiency as it is incorrect.