A little Deca info for the viewing community:
First of all, Deca-Durabolin (and Nandrolone in general) doesnt produce many estrogenic or androgenic side effects. This is because Deca-Durabolin has a very low rate of aromatization (conversion to estrogen via the aromatase enzyme), roughly equal to 20% the rate of Testosterone.
Also, Ive read many places that Deca-Durabolin stores water in connective tissue, thus alleviating joint pain. I have no idea what "storing water in the joints" means. I have no idea how to really quantify that statement, or where it started. However, in one study of postmenapusal women, Deca impoved collagen synthesis (1), and in another study Deca-Durabolin increased bone mineral content. (2)Both of these studies used VERY low doses, which were far too low to promote muscle growth. In my estimation, based on these 2 studies, an athlete attempting to use Deca only for these two effects (increasing bone mineral content and collagen synthesis) should be using 100mgs of Deca-Durabolin every week. Thats actually a higher dose than those two studies used successfully. Even at of this dose, in HIV+ patients who have experienced significant wasting, a 100mg/E2W (every 2 weeks) injection of Deca resulted in a "significant increase in weight" (5). Id never recommend that low of a dose for an athlete, but its evidence of Decas strong anabolic properties. Deca is a very nice anabolic, causing nice (albeit slow) gains in quality muscle. This could be due to its moderately strong binding to the Androgen Receptor, or its many positive non-Androgen-Receptor mediated effects. One such effect is nitrogen retention, which is a major factor in muscle growth and lean mass gains; in one study, with low-doses (65 mg/week) and high-doses of Deca (200 mg/week), both low-doses and high-doses resulted in significant nitrogen retention (33-52 g nitrogen/14 days, representing gains of 0.5 to 0.9 kg lean tissue/week), and body weight increased by 4.9 +/- 1.2 kg, including 3.1 +/- 0.5 kg lean body mass, and treadmill exercise performance (cardiovascular fitness) also improved (7). Need I say that the higher doses in this study produced more gains? Steroid.com members who have posted their results with Deca-Durabolin confirm this in many posts and threads, with their average reccomendation being to take 400-600mgs/week for muscle gain. I have to agree.