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A 1/4 teaspoon of sea salt has about 520–580 mg of sodium, depending on crystal size.

One tablespoon of salted butter has about 91 mg of sodium; unsalted butter has about 2 mg.

One cooked skinless chicken breast has about 60–120 mg of sodium; brined or solution-added breasts can reach 300–400+ mg per serving.

One medium apple has about 1–2 mg of sodium, keeping the fruit effectively sodium-free for most diets.

Yes—aim for about 1,500 mg of sodium per day for high blood pressure; stay under 2,000 mg if 1,500 mg isn’t yet doable.

Most women should aim for under 2,300 mg of sodium per day; many benefit from a 1,500 mg goal, especially with high blood pressure.

In most fluoridated systems, tap water holds about 0.7 mg/L of sodium fluoride equivalent.

Adults need modest sodium; keep intake under 2,300 mg per day, with 1,500 mg a better goal for many to support healthy blood pressure.

Americans average about 3,400 mg of sodium per day—well above the 2,300 mg daily limit for teens and adults.

Scrambled eggs contain about 145 mg sodium per 100 g, or roughly 90 mg per large egg, without added salt or cheese.