Most canned tomato sauces contain sodium.
The USDA states that half a cup of classic marinara sauce contains well over 400mg of salt. The sodium content of a cup of tomato juice is 600 mg. Salt will sneak into your diet if you don’t measure the sauce.
A study published in Food Science & Nutrition found that unsalted tomato sauces have lower cholesterol and hypertension levels. American Heart Association has recipes for making your tomato products. You can also buy low-sodium options if you have to.
