In this question Suitable food for high altitude trekking Wedapashi asks about food for high altitude trekking. Also, in this question, there is a discussion about engergy bars. One of the answers given by whatsisname mentions that Jerky can be carried if "you have unlimited access to water".
In wake of the above mentioned discussions, do energy bars/drinks have a possible dehydrating effect? Is it a safe bet to carry energy bars/nutrition bars for high altitude treks where a threat of dehydration is already high due to the loss of moisture while breathing? (I believe jerky is out of question on high altitude treks)