MSG is another source of sodium that may cause unpleasant reactions including headaches, palpitations, sweating, nausea, a burning sensation in the torso, pressure around the cheeks or jaws, and it may even trigger asthma, migraines or depression.

MSG, or Monosodium Glutamate, is often found in Chinese food, seasoned potato chips, canned and packaged soups, gourmet seasonings, dry-roasted nuts, processed meats, instant gravies, TV dinners and garlic powder.