William Bonac, known in the bodybuilding world as “The Conqueror,” has carved a name for himself with his incredibly dense, symmetrical, and aesthetic physique. Rising from modest beginnings in Ghana to dominating global stages, Bonac’s meteoric rise has sparked one of the sport’s most debated questions: Is his chiseled frame the result of natural bodybuilding, or does it come with chemical assistance?
In the ever-controversial world of professional bodybuilding, where over 99% of elite competitors reportedly use performance-enhancing drugs (PEDs), the inquiry into Bonac’s status holds significant weight not just for fans, but for the ethical evolution of the sport.

Who Is William Bonac?
William Bonac was born in Ghana and raised in the Netherlands, and his journey from humble beginnings to becoming one of the sport’s elite is nothing short of remarkable. Known for his compact yet powerful build, Bonac has stood shoulder-to-shoulder with the biggest names in bodybuilding.
His accolades include multiple top-three finishes at Mr. Olympia, two Arnold Classic championships (2018, 2020), and most recently, a win at the 2024 Empro Pro Men’s Bodybuilding competition. Fans and analysts alike admire his incredible muscle density particularly his legs and arms often drawing comparisons to bodybuilding legend Kai Greene. Learn more about William Bonac’s training and career.
What Does It Mean to Be Natural in Bodybuilding?
Natural bodybuilding entails a complete avoidance of anabolic steroids and all PEDs. It’s a discipline built on rigorous training, strict nutrition, and patience. However, in the IFBB Pro League and similar federations, achieving top-tier physiques without assistance is virtually unheard of.
Reports suggest that over 99% of elite-level bodybuilders use PEDs to stay competitive. This level of enhancement raises the bar, making it nearly impossible for natural athletes to share the same stage without pharmacological aid. As highlighted by BMJ Sports Medicine, the use of steroids and associated compounds is deeply entrenched in the professional sphere.
William Bonac’s Admission About Steroid Use
Unlike many of his peers who either dodge the question or deny outright, William Bonac has taken a refreshingly honest approach. He has openly discussed his use of steroids throughout his professional career a revelation that sheds light on the challenges and sacrifices involved in competing at the highest level.
In 2023, Bonac revealed that he had stopped taking oral steroids in preparation for the Arnold Classic to protect his kidneys. He also mentioned using specific medications to manage kidney inflammation caused by PEDs. Generation Iron covered Bonac’s candid admission, which sparked both support and criticism in the fitness community.

The Role of Genetics and Training in Bonac’s Physique
While PEDs can accelerate growth and recovery, they don’t replace genetics or discipline. Bonac himself credits much of his success to genetics, which have gifted him with an ability to pack on dense muscle mass on a relatively short frame.
His training is notoriously intense. Bonac focuses on compound lifts, isolation exercises, and meticulously planned routines that emphasize symmetry and muscle maturity. Paired with a competition-specific diet plan, his regimen maximizes every advantage his body allows. His commitment to training and detail-oriented prep can be explored more deeply through resources on Bodybuilding.com.
Can William Bonac’s Physique Be Achieved Naturally?
To put it bluntly, the level of muscularity, vascularity, and conditioning that William Bonac displays is virtually unattainable without PEDs. His muscle thickness, separation, and ability to maintain size during contest prep are telltale signs of pharmacological enhancement.
Medical and sports science experts agree that physiques like Bonac’s lie well outside the realm of natural capabilities. According to research, the use of steroids and other agents drastically alters the playing field.
Ethics and Transparency in Competitive Bodybuilding
Steroid use in bodybuilding remains a controversial topic. While many fans accept it as part of the sport, others argue it promotes unhealthy and unrealistic standards. William Bonac stands out for his openness something that is both rare and refreshing in an industry rife with secrecy.
By sharing his health struggles and choices, Bonac encourages upcoming athletes to weigh the long-term implications of PED use. His transparency doesn’t just inform it empowers.
Conclusion
William Bonac has proven himself time and again as one of bodybuilding’s most formidable athletes. While he has confirmed steroid use, his honesty, hard-earned achievements, and advocacy for health awareness mark him as a unique figure in the sport. The debate over what is natural will continue, but Bonac’s legacy offers valuable lessons in transparency, work ethic, and the pursuit of excellence whatever form it takes.
For aspiring athletes, the takeaway should be clear: whether natural or enhanced, sustainable practices and long-term health should always come first.

Hi, I'm Dave Moffat the founder and Chief Editor of steroidsourcetalk.com and certified International Personal Trainer and Certified Nutritionist. My passion has always been bodybuilding but with 15 years' experience in weight loss programs too, it's hard not to mention all that when you're working at your fitness level fullest (I hope). When Im not in the gym or spending time away from my family i often think about what advice would help others achieve theirs goals just like these inspired mine.