Cereal
Some of the biggest surprises in terms of sodium are breakfast cereals, says Daphne Miller, M.D., author of The Jungle Effect: A Doctor Discovers the Healthiest Diets from Around the World—Why They Work and How to Bring Them Home. But sodium levels in cereals vary widely: One cup of Grape Nuts cereal has 580 mg of sodium, while Shredded Wheat has 0 mg. Beller suggests shopping smart and checking sodium content on the nutrition labels—there should be no more than 220 mg per serving.