Backpacking fatigue is usually blamed on a heavy pack, steep inclines, insufficient training, or a poor trail diet. However, a connection almost no one thinks about is iodine deficiency. Iodine deficiency affects your thyroid, which dictates how effectively your body uses energy during hill climbs and exertion. Your metabolic “engine” relies heavily on iodine to keep your legs moving forward. When most people think of iodine, they think of salt. However, salty foods do not mean they contain iodine. Backpacking meals — even those high in sodium, including processed food and snacks—do not supply iodine. And hikers making their own trail food […]
Monthly Archives: March 2026
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