Deca (Deca-Durabolin) is actually a brand used for the compound Nandrolone Decanoate. It does not produce many androgenic or estrogenic side effects compared to other kinds of steroids. This is because Deca has very low rates of aromatization, estrogen conversion through the aromatase enzyme, which roughly equals 20% of the rate testosterone has. It has also been found to lubricate connective tissues, aiding in alleviating joint pains, although this lubricating property also results in water retention in some users.
Effects on the body
The positive effects of Deca include the stimulation of appetite, muscle growth, and an increased production of red blood cells, as well as enhanced bone density. Studies also show that Deca is effective in treatments for osteoporosis, anemia, and certain kinds of neoplasia, which includes breast cancer. Deca received the approval of the FDA in 1983 and is used as a progestin-based contraceptive. Because its nandrolone components are not processed and turned into DHT, the common harmful effects caused by anabolic steroids on the skin, scalp, and prostate are lowered to significant degrees, with nandrolone not totally eliminated but instead broken down to the weaker androgen dihydronandrolone. Lack of alkylation reduces liver toxicity but larger doses of Deca still cause reduced libido and gynecomastia (breast enlargement in males). Other side effects of Deca include cardiovascular damage and erectile dysfunction, as well as a number of ailments caused by lowered luteinizing hormones.
Deca can be indirectly detected through a urine test, when the sample is tested for traces of 19-norandrosterone. However, certain controversies about using urine tests to detect Deca use have risen because a study has shown that the metabolite19-norandrosterone also shows up above upper limits when a high-protein diet is used, utilizing the combination of legal nutritional creatine and extremely vigorous cardiovascular exercise. Although unlikely, another possible way for 19-nodandrosterone to test positive is when beef from steroid-treated cattle is consumed, while cases of false positives have also been reported due to taking in great amounts of lysine, an essential amino acid. The latter was used by C.J. Hunter, an American shot-putter, as a reason for testing positive.