Foreigner
Bluelighter
What I know is that Testosterone does suppress collagen production, but in practice this gets balanced by Estradiol when you're on TRT, as some of your Test will be aromatised into Estradiol.
This goes out of the window when you use higher dosages, AIs (aromatase inhibitors), or compounds that do not aromatise at all (DHT derivatives) or very little (Nandrolone) or aromatise to weaker Estrogens like Boldenone.
To be considered also that people convert Test to DHT at different rates and DHT is a very strong androgen it has a negative impact on tendon structure.
Anecdotally, adding 120mg Nandrolone Decanoate to my 150mg TRT for 2 months took over 5 years of the appearance of my skin, thicker, more elastic, wrinkles filled up, pores shrunk.
Rather than this being a direct action of Nandrolone, I speculate this is due to the 5 alpha reduced version of Nandrolone, DHN, being a very weak androgen reducing the androgenic load on my skin by competing for ARs (androgen receptors) with DHT.
IME, AAS that will age your skin fast are Masteron and Proviron.
Well, I'm just looking at TRT, not these other AASs.
The effect on joints surely has to do with an individual's hormone metabolism. Some pump out more estrogen per quantity of DHT while in others DHT dominates. I agree that aromatization to estrogen is probably what protects the joints, whereas DHT dominance would cause joint issues. DHT tends to support "dry mass" while estradiol supports "wet mass".
The use of AIs is tricky because too much estradiol isn't good, but most of the time this can be managed with proper T levels. The issue is, what is "normal T". Most of the TRT clinics advise patients to get to the upper limit of normal and stay there. Some guys might not need that much, but a lot of the TRT clinics now are pushing that model. If your natural levels sit below 30 nmol (14-30 is normal range) then TRT bringing you to 30 nmol may cause estrogen spillover, in which case some AI use may be called for.
The main thing I'm gleaning from all my reading is there are still so many unknowns... but that things are definitely better than 20 years ago.
I just wish I knew for sure if TRT intrinsically puts one at risk of joint issues or if it's all a product of over-extending oneself due to the strength/drive granted by T.
Seems like there is a variety of data on the subject, for instance, this is suggesting that it increases it:
"[H]igh doses of anabolic androgenic steroids enhance collagen synthesis especially in soft connective tissues, possibly through reversing the action of glucocorticosteroids on collagen metabolism."
I think that much like how other hormones work (i.e., where different concentrations of a given hormone have starkly different effects), the effect of testosterone on collagen synthesis almost certainly isn't as simple as it "decreases (or increases) collagen synthesis".
I agree, it's not probably as simple as a 1:1 statement about T itself. Probably depends on its metabolic relationship to an individual's hormone cascade.
That may also be why some studies say yes and others no to the collagen connection.
There do seem to be a disproportionate number of complaints about joint issues in the TRT community though. However, it's hard to teeze out the variables because a lot of these guys are weight lifting. I've tried making posts directed at TRT users who don't engage in heavy weight lifting but the meat heads always end up replying.
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