Cameron Smotherman made weight at UFC 324 in January 2026. Stepped off the scale at 135.5 pounds, took a few steps, and collapsed face first onto the stage. No hands out. Stitches on his chin. The fight was cancelled. Dana White compared it to fainting at a wedding. Smotherman himself said he barely cut anything. The clip went everywhere because it captured something the sport has been circling for years: a system where making weight and making it safely are two separate problems, and the gap between them keeps widening.
The weight cutting question sits at the center of almost every conversation about fighter safety, and it reaches further than the cage. When a fighter collapses during a cut or a bout falls apart at the last minute, the consequences extend beyond the athletes themselves. Promotions lose scheduled fights, broadcasters lose key attractions, and betting markets across dozens of jurisdictions are forced to reprice cards overnight as odds and matchups change. Even in tightly regulated markets, such as those examined in the complete guide to Dutch betting scene, operators can be forced to adjust odds and trading strategies within hours of a late withdrawal. The financial incentive to fix the problem exists on every side. The fix does not arrive.
Five months before Smotherman hit the floor, Brian Ortega provided the year’s other defining image. Cutting for a featherweight co-main at UFC Shanghai, Ortega lost consciousness on a stationary bike and woke up in an emergency room thirty minutes later, packed in ice, staff around him, no idea where he was. He ripped out the IV, took an Uber to the weigh-in, missed by seven pounds, negotiated a catchweight, and fought all five rounds against Aljamain Sterling anyway. He lost every one of them. Ortega later revealed the cut was forty pounds. He has since announced a move to lightweight.
The logic that traps everyone
Weight cutting in combat sports operates as a textbook prisoner’s dilemma. If nobody cut, the matchups would still be fair, based on actual size. Every fighter in a division would compete near their natural weight, and the sport would be safer without losing competitiveness. The problem is that this outcome requires collective trust, and collective trust does not exist in a sport where two people are trying to knock each other unconscious.
The moment one fighter discovers that dehydrating from 190 down to 155, then rehydrating back to 180 by fight night, gives a size advantage, every other lightweight faces a choice: match that cut or accept being the smaller person in the cage. Accepting a 25 to 30 pound disadvantage in the clinch, on takedown defence, on absorbing strikes, is not a competitive inconvenience. It can be career-ending. So fighters keep cutting, each generation pushing the numbers a little higher because the previous generation already moved the baseline. In the early 2000s, dropping ten pounds was considered aggressive. By 2026, fighters talk about cutting fifteen as routine. California State Athletic Commission data shows fighters regularly gaining 8 to 18 percent of their body weight between the scale and the cage. A welterweight who weighed 170.5 at UFC 298 stepped into the octagon the next day above 200.
The arms race does not reward the most talented fighter. It rewards the biggest fighter who can survive the cut. That distinction matters for anyone trying to understand why current MMA rankings do not always reflect what happens on fight night. A ranked lightweight and an unranked one may carry the same number on paper, but if one rehydrates to 185 and the other sits at 165, the ranking tells you nothing about the physical reality inside the cage.
What the science actually looks like
The human body is roughly 60 percent water, and that is the vulnerability the entire system exploits. A fighter six weeks out from a bout will spend five of those weeks losing body fat the slow way: calorie deficit, high training volume, measured conditioning. That part is manageable and completely safe. The damage starts in fight week.
Most fighters arrive at fight week still 10 to 15 percent above their contracted weight. The method for closing that gap is called water loading. Early in the week, they drink enormous volumes, sometimes over eight litres a day, to train the kidneys into flushing aggressively. Then they cut water intake to zero. The kidneys keep dumping fluid at the same rate, not knowing the supply stopped. The body cannibalises its own hydration. Fighters simultaneously strip carbohydrates and sodium from their diet, because every gram of stored glycogen bonds with several grams of water, and depleting glycogen pulls pounds of weight without touching muscle tissue.
The final phase is thermal. Hot baths with Epsom salts, plastic wraps, foil blankets, sealed sweat suits with duct-taped cuffs. Fighters sit in saunas for hours or pace hotel rooms generating heat, spitting saliva into cups to lose ounces. Medical experts flag anything above 5 percent dehydration as dangerous. Modern UFC fighters routinely exceed 10. Brian Ortega’s cut before Shanghai represented roughly 22 percent of his fight-night weight. He ended up in a coma.
The IV ban that made things worse
For years, intravenous rehydration was the safety net. Fighters could drain themselves to the edge of kidney failure, hit the scale, then hook up to a couple litres of saline and recover faster than their gut could ever manage on its own. It was ugly, but it kept extreme cuts survivable.
In 2015, the UFC partnered with USADA and imported WADA’s anti-doping framework, which banned IV infusions over 50 millilitres. The ban had nothing to do with weight cutting. USADA’s concern was that large IVs could mask blood doping or hide performance-enhancing drugs. Weight cutting was collateral damage. The rule removed the most reliable recovery tool without removing the incentive to cut. Fighters switched to oral rehydration: high-sodium fluids, fast carbs, the UFC Performance Institute’s engineered shakes. The gut can only absorb so much so fast. Research showed that even 24 hours after making weight, fighters relying on oral methods alone were not fully recovered. They were just less dehydrated than they had been on the scale. The cuts stayed the same. The recovery got worse. The risk went up.
The fix that works and the promotion that won’t use it
ONE Championship, after the death of contracted fighter Yang Jian Bing during a weight cut in December 2015, implemented a walking-weight system that no other major promotion has matched. Fighters submit daily weights through an online portal. Their division is assigned based on that average, not based on what they can dehydrate down to. During fight week, weights are checked daily and urine specific gravity is tested at multiple points, including three hours before the event. A fighter who fails a hydration test cannot weigh in until they pass. Since implementing the system, ONE has reported no further fatalities linked to weight cutting.
The UFC has not adopted anything comparable. The 8 percent guideline introduced in 2016 remains a recommendation, not a rule. No fight has ever been cancelled for exceeding it. The promotion’s position is straightforward: it follows the rules set by independent state athletic commissions, and any industry-wide reform would require every commission to agree simultaneously. That is technically true and practically convenient. As long as the UFC can point to the commissions, there is no legal pressure to lead.
The business argument runs deeper. If the UFC adopted a walking-weight system overnight, almost every current champion would have to move up a division. Rankings would collapse. Superfights built around specific matchups would dissolve. Records set across thirty years of competition would lose context. The all-time rankings on this site, and every historical comparison the sport depends on for its narrative, would need an asterisk. The promotion has decided, so far, that the cost of disruption exceeds the cost of the status quo.
Where this leaves the sport
Four new weight classes (165, 175, 195, 225 pounds) were approved by the Association of Boxing Commissions years ago. Dana White has refused to implement them, arguing that adding a 165-pound division would just mean bigger fighters trying to make 165. He is probably right, and that is exactly the point. The system does not lack solutions. It lacks the will to absorb the short-term chaos those solutions would create.
Fighters will keep cutting because one person cutting means everyone has to. Coaches will keep normalising it because their coaches did the same. Young fighters will watch champions dehydrate on camera and assume that is what elite looks like. The science that was supposed to make cuts safer only made more extreme cuts survivable, which pushed the ceiling higher. And every few months, someone will collapse on stage, or wake up in a foreign hospital with no memory of how they got there, and the conversation will start again from exactly the same place it started the last time. The sport has been told repeatedly what the answer looks like. ONE Championship built it, tested it, and proved it works. The UFC looked at the evidence, weighed it against the business model, and chose the business model. Until that calculation changes, the arms race continues.