However, insufficient research has been conducted to determine if
mild dehydration, at levels that may occur in healthy individuals during their ordinary daily activities,
degrades cognitive performance, alters mood, or produces adverse symptoms.
«Even
mild dehydration that can occur during the course of our ordinary daily activities can
degrade how we are feeling — especially for women, who appear to be more susceptible to the adverse effects of low levels of
dehydration than men,» says Harris Lieberman, one of the studies» co-authors and a research psychologist with the Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine in Natick, Mass. «In both sexes these adverse mood changes may limit the motivation required to engage in even moderate aerobic exercise.