If you're 51 or over or in a high-risk group, the American Heart Association recommends you watch how much sodium you get. If you're over 51, the recommended limit is 2,300 mg per day. And if you're in a high-risk group, make sure you get no more than 1,500 mg of sodium each day. Too much sodium can raise your blood pressure and put you at higher risk for a heart attack and stroke. The main culprits? Processed foods, such as frozen foods, snack foods, salad dressings, and lunch meats. Read labels carefully and look for "sodium-free," low-salt, or no-salt alternatives.