Interesting article that was just put out looking at the muscle cells of former steroid users. I think many of us worked under the assumption that this was true, but now there is some actual supporting evidence on the cellular level.
Higher myonuclei density in muscle fibers persists among former users of anabolic androgenic steroids
Abstract:
Higher myonuclei density in muscle fibers persists among former users of anabolic androgenic steroids
Abstract:
Background and objective
No information exists on the long-lasting effects of supraphysiological anabolic androgenic steroids (AAS) usage on the myocellular properties of human skeletal muscle in previous AAS users. We hypothesized former AAS users would demonstrate smaller myonuclei domains (i.e., higher myonuclei density) compared to matched controls.
Methods
A community-based cross-sectional study in men aged 18-50 years engaged in recreational strength training. Muscle biopsies were obtained from the m. vastus lateralis. Immunofluorescence analyses were performed to quantify myonuclei density and myofiber size.
Results
Twenty-five males were included: 8 current and 7 previous AAS users and 10 controls. Median (25th-75th percentiles) accumulated duration of AAS use was 174 (101–206) and 140 (24–260) weeks in current and former AAS users, respectively (P = 0.482). Geometric mean (95%CI) elapsed duration since AAS cessation was 4.0 (1.2; 12.7) years among former AAS users. Type II muscle fibers in former AAS users displayed higher myonuclei density and DNA-to-cytoplasm ratio than controls, corresponding to smaller myonuclei domains (P = 0.013). Longer accumulated AAS use (weeks, log2) was associated with smaller myonuclei domains in previous AAS users, beta-coefficient (95%CI), -94 (-169; -18), P = 0.024. Type I fibers in current AAS users exhibited a higher amount of satellite cells per myofiber (P = 0.031) compared to controls.
Conclusion
Muscle fibers in former AAS users demonstrated persistently higher myonuclei density and DNA-to-cytoplasm ratio four years after AAS cessation suggestive of enhanced retraining capacity.