New Research Challenges a Long-Held Theory on Bodybuilder Guts | Dr. Jim Stoppani @DrJimStoppani
New Research Challenges a Long-Held Theory on Bodybuilder Guts | Dr. Jim Stoppani  @DrJimStoppani
Uploaded June 2026 | Updated September 2026, 2 weeks ago
A new MRI study compared enhanced bodybuilders, natural bodybuilders, and recreationally active individuals to investigate a controversial question: do anabolic steroids affect more than muscle growth?

Researchers found that bodybuilders using performance-enhancing drugs had significantly larger hearts, livers, kidneys, and spleensβ€”up to 52% larger than natural bodybuilders and controls. The findings also challenge common explanations involving protein intake and suggest that anabolic steroids themselves may play a major role in organ enlargement.

In this video, we break down the study, the concept of visceral organ growth, and what the results may mean for athletes considering steroid use.

πŸ“š Topics Covered:
β€’ Anabolic steroids and organ growth
β€’ MRI research on bodybuilders
β€’ Heart, liver, kidney, and spleen enlargement
β€’ Growth hormone vs anabolic steroids
β€’ Visceral organ growth explained
β€’ Potential long-term health implications

Source: Peer-reviewed MRI research comparing enhanced and natural bodybuilders.
New Research Challenges a Long-Held Theory on Bodybuilder Guts | Dr. Jim StoppaniCreatine builds muscle two ways: fuller muscle cells and more energy for better workouts.Real incline press failure should look ugly.Build Bigger Shoulders Using Only a Door Frame and Isometrics | Dr. Jim StoppaniWhy Sitting Between Sets Can Quietly Add 20 Minute To Your Workout | Dr. Jim StoppaniThink flat bench is best? Research says your next chest day may need a different start.More stretch does not always mean better exercise choiceFasted workouts may affect more than your energy in the gym! #fasted #training gIs 8–12 reps really best for muscle growth? Research says you have more options.Training reverse grip bench alone? This setup makes it safer and easier without a spotter.Everything You Need to Know About Shrugs | Dr. Jim StoppaniUse this bar to build a BIGGER CHEST! Does your gym have a cambered bar?
Jim Stoppani, PhD |

New Research Challenges a Long-Held Theory on Bodybuilder Guts | Dr. Jim Stoppani

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER