Mixed
Sodium added to food outside the home (commercial processing and restaurant preparation) accounts for approximately 71% of total sodium intake in US adults, making it the primary source of dietary sodium.
To reduce sodium, focus on the food you buy and eat outside the home, not just the salt shaker. Check Nutrition Facts labels for packaged foods and ask for nutrition info when eating at restaurants. Reducing salt at the table is helpful but insufficient on its own because most sodium is already in processed and restaurant foods.
Sodium added to food outside the home was the leading source of sodium, accounting for more than two thirds (70.9%) of total sodium intake in the sample.
Why this rating
Large sample size (n=450), diverse demographics, and use of objective duplicate salt samples, though it is a cross-sectional observational study.
Source
Sources of Sodium in US Adults From 3 Geographic Regions
Lisa Harnack et al. · Circulation · 2017
DOI 10.1161/circulationaha.116.024446
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