Peru’s breathtaking landscapes, from Machu Picchu’s ancient ruins to Cusco’s vibrant streets, draw travelers worldwide. However, many visitors face a hidden challenge: altitude sickness. At elevations exceeding 8,000 feet, symptoms like headaches, nausea, and fatigue can dampen your adventure. I learned this the hard way during my first trip to Cusco. After stepping off the plane, I felt dizzy and breathless, unprepared for the thin air. This experience inspired me to research and share how to avoid altitude sickness in Peru. According to the CDC, 25% of travelers to high-altitude destinations experience acute mountain sickness (AMS). With preparation, you can conquer Peru’s heights safely. This guide offers actionable tips, backed by science, to ensure your journey is memorable for the right reasons. Let’s dive into how to stay healthy and thrive at altitude.