Harvard Heart Letter

Salt shakedown: A boon for lowering blood pressure

Health experts say the FDA’s proposed guidelines to scale down sodium levels in processed and restaurant food is a long-awaited step in the right direction. Lowering dietary sodium lowers blood pressure, a key risk factor for heart disease. Current federal guidelines advise getting no more than 2,300 milligrams (mg) of sodium (one of the main components of salt) per day, but most Americans consume about 3,500 mg a day. About 75% of the sodium people consume comes from processed foods; the biggest sources include breads and rolls, pizza, and cold cuts and cured meats.
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