How Ian Machado Garry Used a Vegan Diet to Transform His UFC Performance
As Ian Machado Garry prepares for the biggest fight of his career, BBC Sport documents how a vegan switch five years ago recalibrated his preparation model.
The Irish welterweight challenges Islam Makhachev for the title at UFC 330 in Philadelphia on 15 August — and credits the plant-based diet with rebuilding his weight-cut resilience after a string of camp-time illnesses.
The recalibration point
Before the change, the 28-year-old says repeated infections during weight cuts were degrading his training output. A depleted immune system meant the body was spending resources on defense rather than adaptation. Since going vegan, his ledger reads clean — this will be his 11th fight under the new protocol, with no soft tissue injuries and no reported muscle problems.
The output data
Post-switch record: nine wins in ten fights. More telling are the conditions — two short-notice bookings against Carlos Prates and Shavkat Rakhmonov, both accepted on seven days' notice. Machado Garry frames those as matchups he couldn't have processed under his previous protocol. Faster recovery meant shorter camp windows became viable.
What the numbers signal for combat athletes
The nutritional baseline is straightforward: higher fibre intake, lower cholesterol, reduced inflammatory load. The tactical implication for weight-class fighters is cleaner adaptation windows between sessions. Less digestive workload means more internal capacity for hard training blocks — a direct efficiency gain during the final weeks of camp. The trade-off, as Machado Garry notes, is discipline. Plant-based protocols require planning; key nutrients don't always present conveniently, and supplementation becomes mandatory rather than optional.
He enters the Makhachev bout with company on the vegan roster — Lewis Hamilton, Venus Williams, and the Diaz brothers have all publicly linked the diet to career longevity. Should he win, he'd be the first Irish UFC champion since Conor McGregor. The platform is already expanding past the cage: Machado Garry has partnered with PETA and intends to use a championship run to amplify animal welfare and environmental messaging, turning a dietary decision into a wider operational mandate.
