Making decision about fluid intake: increase or not increase

This commentary refers to 'Middle age serum sodium levels in the upper part of normal range and risk of heart failure', by N. I. Dmitrieva et al., https://doi.org/10.1093/ eurheartj/ehac138 and the discussion piece 'Hypernatremia and subclinical chronic kidney disease', by P. Sarafidis et al., https://doi.org/10.1093/eurheartj/ehac367.

Automated summary

This commentary and discussion piece discuss the impact of serum sodium levels in middle-aged individuals on the risk of heart failure and subclinical chronic kidney disease.