« Make healthy hydration the new norm »

Does dehydration influence your mood?

Our brain is made of 75% water. It seems therefore logical that dehydration may have an impact on cognitive functions and mood.

Several studies, performed in healthy persons, looked at the effects of induced dehydration on cognitive performance and motor function: tiredness, mood, choice reaction time, short- and long-term memory, attention, arithmetics… It appears that a 2% dehydration is sufficient to impair functions and performances¹ ².

Some studies have suggested that adverse effects may even be present at 1% dehydration³ ⁴.

Young children and adolescents, in particular, may be at risk of impaired cognitive function (concentration, alertness and short-term memory) due to insufficient hydration⁵ ⁶.

Learn more about kids and cognition