Review of systematic reviews about the efficacy of non-pharmacological interventions to improve sleep quality in insomnia.

Background  Insomnia is a very common condition in various populations. Non-pharmacological interventions might offer (safe) alternatives for hypnotics. Aim  To evaluate the evidence for efficacy from systematic reviews about non-pharmacological interventions to improve sleep quality in insomnia by a systematic review of systematic reviews and meta-analyses.

Sodium and potassium intake and risk of cardiovascular events and all-cause mortality: the Rotterdam Study.

Background: Dietary electrolytes influence blood pressure, but their effect on clinical outcomes remains to be established. We examined sodium and potassium intake in relation to cardiovascular disease (CVD) and mortality in an unselected older population.

Methods: A case-cohort analysis was performed in the Rotterdam Study among subjects aged 55 years and over, who were followed for 5 years.