Most people get too much salt (sodium) in their diet. Some people are salt sensitive and it causes their blood pressure to rise. Most salt intake comes from processed food. Most people eat an average of 3,300 mg of sodium per day. Us Dietary Guidelines Recommend limiting intake to 2,200 mg per day. Here is a great resource for information related to salt intake and tips to lower it.
www.cdc.gov/vitalsigns/Sodium/index.html