Not sure if this is the right place to ask this, but has anyone experienced or heard of someone having difficulty swallowing food when they go backpacking or possibly other endurance exercise?
The first time it happened, he thought it was because of the altitude in the High Sierra. But at lower altitudes it seems to be happening. He's 64 years old. We think possibly it could be a side-effect of medication, but it's not a listed side-effect of the medications he takes. Of course, who on earth takes old man medications and then goes on hundred mile or more walks? How would they ever find such a side-effect? So it could also just be age-related or maybe even psychological. Once it happens the fear of it happening again makes it happen again? I don't know.
Anyone have experience with this? He literally can't swallow his food. He chews and chews but can't make himself swallow it. He's okay with liquids. His last trip he lost so much weight he weighed only 130lbs at the end. This time he cut his trip short because of the problem.

