Soup can be a huge source of excess sodium

When the weather turns cold I find myself eating a lot more soup. It's hot, it's filling and there are so many different types - from roasted chicken and chardonnay to butternut squash.

Before you reach for a can soup, you might want check the Nutrition Facts Label for the sodium content.

The food experts at the Nutrition Action Healthletter point out that one cup of soup -- about half a can -- could easily have 800 milligrams of sodium.

Double that if you eat the entire can for a meal, as many people do. That's 1,600 mg, about a day's worth of sodium.

Of course, you can find soup that isn't super salty from Amy's Organic, Imagine Organic, Pacific Organic Dr. McDougal's or Tabatchnick.

And Campbell's has reduced the salt in some of its soups. The company's Healthy Request Soups have 410 mg of sodium. Some Healthy Choice soups -chicken noodle, chicken tortilla and chicken with rice - have about 390 mg of sodium per serving.