Marc Carroll, husband of fitness model Lauren Simpson, recently spent three days in an emergency cardiac ward after a rapid health decline left him unable to walk, breathe properly, or manage basic daily activity.
Carroll, 37, was diagnosed with cardiomyopathy, an enlarged heart, and tachycardia after blood tests revealed his heart was leaking troponin into his bloodstream.
Fitness coach Greg Doucette responded with a detailed breakdown of what he believes drove Carroll’s deterioration.
Carroll’s symptoms accelerated following a long flight home from Hawaii. Within days, severe swelling in both legs left him unable to climb stairs, despite previously logging 20,000 steps per day.
In a public update, Carroll described the situation: “Right now, my heart has an impaired ability to pump blood effectively around the body.”
Doucette identified the condition as acute decompensated heart failure progressing to stage three out of four, and was direct about what he believes caused it.
“Sudden swelling in both legs, that indicates you’ve already experienced heart failure,” Doucette said, also pointing to exercise intolerance as a serious warning sign.
Carroll acknowledged past PED use during his early 20s but cited genetics as the primary factor behind his heart’s thickening, describing roid use only as a secondary possibility.
Doucette rejected that framing outright. “Potentially st*roid use. No, st*roid use. It’s not a potential. We need to stop downplaying the things that have actually happened,” he said.
Carroll currently states he has maintained the same testosterone dose for the past three to four years, though he has not disclosed the amount or shared blood work publicly. Doucette noted the gap, pointing out that an undisclosed dose could still fall well into abusive territory regardless of how stable it has been.
He also raised questions about Carroll’s reported three hours of sleep per night during a recent fat loss phase and whether additional compounds may have been involved.
Despite the severity of the diagnosis, Carroll remained focused on what lies ahead. “I’ve got the world’s most beautiful wife and daughter that I have to keep figh ting for. I’ve got a lot of treatment, a lot of work to do over the next six months to a year for my heart,” he said.
Doucette tempered any optimism with a clear-eyed assessment: “He can slow down the decline. He can make the most of it. He can do the best that he can.” He added, “When you make decisions, bad decisions in your life, for example, abusing st*roids, there is no going back.”
Carroll faces a lengthy recovery as he works with medical teams to manage his ongoing cardiac condition over the coming year.
