This is the standard method of injection for anabolic steroids among anabolic steroid users, as well as the medical establishment(for example, in the preparation of steroids for use by athletes, or as injectable replacement therapy for athletes who are unable to use their own endogenous testosterone) as well as the military (for example, as an aid to the military in the control of soldier's sex drive).Because synthetic estrogens are metabolized primarily by the liver, they are thought to be more toxic to women than they are to men, anabolic steroid injection sites. Indeed, the most extensive investigation of the effects of synthetic estrogens in the female brain occurred with the use of progesterone alone, at high doses. At low doses, all the women treated developed significant brain atrophy, how to inject steroids in thigh. This study has been used as a basis for the belief that high doses of hormones may impair the developing brain , how to inject steroids in glute. The results of various laboratories suggest that, with very high doses of hormone therapy, such as for cancer chemotherapy (especially in women with breast cancer), the effects on the developing brain are similar to those found in the laboratory. The brain tissue obtained from these women, compared with those of their uninfected sisters, showed a marked reduction in the proliferation of new neurons; the total number of neurons was reduced by 75%, and the proportion of long-lived cells was markedly reduced (the long-lived cells seem to be more vulnerable to damage, especially on long-term use), though the proportion of long-lived neurons was not significantly affected. The same effects were observed in the brains of the female cancer patients treated with the progestin progestin-only pill, anabolic steroid kidney. However, progestins cannot prevent the loss of neurons in response, because they cannot cause the cell proliferation necessary to reduce the number of new neurons, and the loss of new neurons also causes the loss of long-lived cells, steroid injection sites diagram. In addition, the progestin progestin-only pills, although they contain estrogen, do not increase neurogenesis; if neurogenesis is increased, the effect is decreased. Neurogenesis may be decreased with prolonged hormone exposure as with progesterone, because the estrogenic effects of progestin can be blocked by the estrogenic hormone estradiol , steroid anabolic sites injection. A similar reduction of neurogenesis as seen in animals is seen among young women and in women with estrogen deficiency ; indeed, the progestin progestin-only pill has been shown to have neuroprotective properties in both animals and humans .The use of synthetic estrogens might be expected to increase the risks of breast cancer, anabolic steroid injection in hip.