Eating a lot of pickles may cause nausea, weight gain or dehydration as a result of the high amount of sodium they contain. High sodium intake can also lead to high blood pressure, heart attack and stroke.
Five dill pickle spears contain the recommended amount of sodium intake per day, and 1 cup of dill slices contains just under that amount. Some brands offer low-sodium versions, which can help balance a person's diet. Pickles also contain notable amounts of fiber and iron and small amounts of potassium and vitamins C and K. They are low in calories and fat as well.