Nutrition
Altitude Carb Intake Shift
Altitude carb intake shift raises carbohydrate share on high hikes—simple carbs metabolize with less oxygen and often tolerate better when appetite drops above ten thousand feet.
Altitude carb intake shift is the move toward higher carbohydrate share on high-elevation trekking days because carbs metabolize with less oxygen than fat at altitude and gut tolerance often favors simple sugars. Many guides suggest sixty to seventy percent of trail calories from carbs above ten thousand feet, with protein maintained for recovery but fat trimmed at lunch if nausea hits.
Do not slash total calories—shift the mix while keeping hourly fuel on the clock.
Common questions
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Do you need more carbs at altitude?
Total calories often rise while appetite falls; shifting toward carbs can improve tolerance and oxygen-efficient fueling. Keep protein adequate for multi-day recovery.
Related terms
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