Thanks Ginab4u - I knew that but forgot. I should have googled it. One thng I know is that I'm not using too much sodium - I eat sea salt and only a little on cut-up veggies. I don't eat processed food. Something else is going on. Maybe I should go back to the doctor, she would just give me meds, and I wonldn't take them. I had nothing wrong with me that she could find in April.