March 6th 2014 FDA approved Aveed for treatment of male hypogonadism, aka testosterone deficiency. Aveed is a long-acting form of injectable testosterone called testosterone undecanoate. In Europe, testosterone undecanoate (under the name Nebido) has a long successful TRT track record for treatment of testosterone deficiency and its consequences (especially obesity, the metabolic syndrome and diabetes).[2-16]
In contrast to shorter acting forms of testosterone (e.g. cypionate), testosterone undecanoate only needs to be injected every 6 to 12 weeks, and thereby offers practical benefits to patients. (Comment: for Nebido (1000 mg per 4 ml) the initial interval is 6 weeks, followed by intervals of 10-14 weeks; for Aveed (750 mg per 3 ml) the initial interval is 4 weeks, followed by 10-week intervals).
Five days after the FDA approval a notable and impressive 6-year long TRT study was published, confirming the health benefits of TRT that have previously been found in shorter term studies... 
We previously posted a commentary on the recently published and notoriously flawed study which concluded that TRT increases risk for heart attack.
This is the study which caused the media debates:
January 29th issue, the Scientific Journal PLOS (Public Library of Science) ONE published the article:
Here we have gathered commentaries from other medical professionals, all in one place: