Global sodium consumption and death from cardiovascular causes

Area of Science:

• Public Health
• Cardiovascular Epidemiology
• Nutritional Science

Background:

• High sodium intake is a known risk factor for elevated blood pressure and cardiovascular disease.
• The precise global impact of sodium consumption on cardiovascular mortality remains uncertain.

Purpose of the Study:

• To quantify global sodium consumption patterns across different demographics and countries.
• To estimate the cardiovascular mortality attributable to excessive sodium intake worldwide.

Main Methods:

• Utilized survey data on sodium intake (urinary excretion and diet) from 66 countries.
• Integrated meta-analyses of sodium's effect on blood pressure and blood pressure's effect on mortality.
• Employed comparative risk assessment to estimate cardiovascular effects versus a 2.0 g/day reference intake.

Main Results:

• Global average sodium consumption was 3.95 g/day in 2010, with significant regional variations.
• An estimated 1.65 million annual cardiovascular deaths were linked to sodium intake exceeding the reference level.
• The majority of these deaths occurred in men, low- and middle-income countries, and were premature.

Conclusions:

• Sodium consumption above 2.0 g/day was associated with 1.65 million cardiovascular deaths in 2010.
• Findings highlight the substantial global burden of cardiovascular disease attributable to high sodium intake.
• Public health strategies targeting sodium reduction are crucial for mitigating cardiovascular mortality.