What Happens to the Body at High Elevations?

Trekking at higher altitudes is an incredible experience–both physically and figuratively. When climbing over 8000 meters (2,400 feet), or trekking towards Himalayan peaks, your body experiences numerous physical adjustments as it adjusts to less oxygen at higher elevations; some changes may be manageable while others could pose danger if left unmanaged. Being aware of any possible physical alterations at higher altitudes is crucial when hiking in the mountains. Reaching the Himalayas requires exploring high-altitude territory, so trekkers must understand how this environment will impact them. We use the term “exploring” rather than “trekking”, since your body responds similarly whether hiking, cycling through Khardung La, or simply exploring. Therefore, anyone planning a trip to altitude destinations must read this article and be informed on any effects from high altitude environments – this piece should become essential reading!

At sea level, your body becomes used to the specific amount of oxygen present and will instinctively adjust by increasing intake, resulting in breathing more often. When low levels of oxygen in your blood are detected, your body responds by increasing circulation of oxygen-rich blood which triggers your heart rate to rise and bone marrow churning out countless red blood cells that provide oxygen throughout the body; ultimately too many red blood cells could thicken and slow blood flow like thickened ketchup leading to possible clotting when not working. At higher altitudes, increased stress on your heart and lungs leads to your body expelling excess fluids to help ease their load – this process of diuresis. Sleep problems in higher altitudes may also result from shallow breathing at night, prompting your brain to wake you up and remind your body to breathe properly, leading to less restful slumber overall. Bodily adjustments may also play a part in adapting to higher elevations.

Concerning the physical changes you are experiencing, it’s important to realize that they occur even without working hard at it. They have nothing to do with climbing or hiking – it’s simply due to living at a higher level. If you are sitting at an even surface, your body could become increasingly adaptable in response to changes, which may become tiring over time. It’s important to realize that the changes I’ve described so far are simply natural responses to an increase in elevation; they should not be interpreted as signs that an issue exists. Most bodies adjust easily to higher altitudes; however, sometimes our bodies cannot adapt fully, leading to high-altitude sickness or even just feeling uncomfortable at these higher elevations. Understanding fundamental research makes treating such illnesses relatively straightforward – the biggest difficulty encountered by trekkers tends to be a lack of awareness, so I wanted to provide this info.