Chapter 21 · The 5-7-10 Rule

The exam room smelled like hand sanitiser and floor wax. Mark sat in the hard chair — the one that always made him feel slightly too large for the space, like his body was an imposition on the room's careful sterility — and watched Dr. Nguyen pull up his chart on the screen. Twelve weeks to the day since that first terrifying appointment where she'd said "0.68" and he'd felt something release in his chest for the first time.

"Okay," she said, clicking through the results. "Let's see where we're at."

Her forehead creased slightly as she read. The silence stretched. Mark could hear his heartbeat in his ears — the accelerated rhythm of a man who had spent twelve weeks doing everything he could think of and was about to find out whether any of it had mattered.

She turned from the screen to face him, and Mark's stomach clenched. He knew the serious-doctor expression. He'd catalogued every variation of it over three months of appointments.

"Starting weight: 218 pounds," Dr. Nguyen said. "Current weight: 201."

Mark nodded. He'd known this number for two weeks — Priya had weighed him at the gym, and they'd both stood there looking at the scale in silence, doing mental arithmetic.

"That's seventeen pounds," Dr. Nguyen continued. "Or 7.8 percent of your starting body weight."

She leaned back in her chair, and her expression shifted. Not the bad-news expression. Something else. Something that looked, if Mark was reading it correctly, almost like pride.

"Mark, you've just crossed the 7 percent threshold. Do you know what that means?"

He shook his head. There was more science coming — he could feel it the way you feel weather changing. Over twelve weeks, he'd learned to make room for these moments, to hold space in his head for information that would either devastate him or lift him up.

"At five percent weight loss, hepatic steatosis begins to reduce. Your liver starts clearing fat." She held up one finger. "At seven percent, inflammation decreases significantly. If you had MASH — metabolic dysfunction-associated steatohepatitis — it starts to resolve. The inflammation in your liver is quieting down." Two fingers. "At ten percent, fibrosis stabilises or even reverses. And the research is very clear: patients who achieve ten percent or greater weight loss have a 97 percent chance of complete MASLD resolution." Three fingers.

She pulled up two images side by side — the ultrasound from twelve weeks ago alongside today's. Mark had seen enough ultrasounds by now to read the difference. The white cloud in the earlier image — the bright hyperechogenicity that indicated fat — had visibly diminished. The liver looked darker. Closer to normal.

"Your ALT has dropped from 78 to 51," she said. "AST from 52 to 38. GGT from 61 to 42. FIB-4 from 0.68 to 0.59. These are solid improvements across the board. And here's what matters: you're not losing muscle. Your body composition is improving — you're burning specifically the fat."

Mark leaned forward. "So if I keep going. If I get to ten percent..."

"Then you're looking at full resolution. No cirrhosis risk. No need for advanced treatment. Just continued monitoring and the lifestyle that got you here."

She closed her laptop and faced him directly. "How are you doing? Honestly. Twelve weeks is a long time."

And Mark, surprisingly, felt tears start. Not from despair — that had been the currency of the early weeks, the 2 AM panic, the catastrophising, the conviction that his liver was a time bomb. These tears were different. They were the strange, almost disorienting sensation of hope that was actually grounded in data. Not hope as wishful thinking. Hope as a mathematical projection based on documented physiological changes.

He wiped his eyes. "I'm good," he said. "I'm actually good."

---

In the car afterward, sitting in the clinic parking lot with the engine running and the AC on, Mark opened his phone and typed the numbers into his tracking app. ALT 51. AST 38. GGT 42. Weight 201. FIB-4 0.59. The trend lines extended downward — every one of them — like a story being written in a language he'd spent twelve weeks learning to read.

Then he opened his notes and typed what Dr. Nguyen had told him. The thing he wanted to remember. The framework that gave the whole journey a structure it hadn't had before.

The 5-7-10 Rule: 5% weight loss — liver fat starts to clear. 7% weight loss — inflammation resolves. 10% weight loss — full MASLD resolution in 97% of patients.

Not "lose some weight." Not "try your best." Not "eat healthier and see what happens." Specific thresholds. Specific outcomes. Specific evidence.

He was at 7.8 percent. The five and seven percent thresholds were behind him. The ten percent threshold — 21.8 pounds from his starting weight of 218, meaning he needed to reach 196.2 — was about five pounds away. At his current pace of roughly a pound and a half per week, that was three to four weeks out.

Three to four weeks to the number that, in 97 percent of patients studied, meant complete resolution.

He sat in the parking lot for a long time, letting that settle. Then he texted Priya: "ALT is 51. Down from 78. I crossed 7 percent. Dr. Nguyen says 10 percent is full resolution."

Priya's reply came back in seconds: "I'm crying at my desk. Don't tell anyone."

He texted Dave: "7.8 percent weight loss. Inflammation resolving. Labs all trending down. 10 percent is the target for full resolution."

"You're going to make it, man. You're basically already there."

Mark put the phone down and drove home. The route along Congress Avenue — the same route where, twelve weeks ago, he'd sat in traffic with his jaw clenched, spiralling, convinced the world was ending — looked different today. Not objectively different. The same live oaks, the same storefronts, the same heat rising off the asphalt. But he was different in it. He was a man with a trend line pointing in the right direction and a threshold he could see from where he was standing.

---

That evening, Mark and Priya sat at the kitchen table — the same table where he'd researched fasting at 2 AM, where he'd drawn the vicious cycle diagram, where he'd started his breathing exercises, where he'd built his spreadsheet and tracked his leading indicators and learned to measure his waist instead of just his weight.

"I almost quit at week four," he said. "The scale wasn't moving fast enough. My labs hadn't been drawn yet. I had no evidence anything was working."

"But you didn't quit," Priya said.

"Because of the leading indicators. The fasting hours. The sleep scores. The steps. They were all improving before the labs caught up. And then the labs caught up."

He opened the tracking app and scrolled through the twelve-week history. The composite score — a weighted aggregate of enzyme trends, weight loss percentage, and lifestyle compliance — had climbed from 32 at week zero to 74 at week twelve. A line rising steadily while the world around him had felt, at times, like it was falling apart.

"The thing I want to tell people," Mark said, "is that gradual works. Not dramatic. Not heroic. Gradual. One pound a week. One walk a day. One meal at a time. And the liver responds."

"You're going to reach ten percent," Priya said. It wasn't a question.

"Yeah," Mark said. "I am."

Biscuit, hearing the tone of the conversation and interpreting it correctly as a moment that required his presence, jumped onto the couch between them and placed his head on Mark's thigh.

The kitchen was quiet. The tracking app glowed on the table, its trend lines pointing toward a future that, twelve weeks ago, Mark hadn't believed was possible.

Five percent: done. Seven percent: done. Ten percent: three weeks away.