Chloride occurs naturally in foods at levels normally less than 0.36 milligrams per gram of food. The average intake of chloride during a salt-free diet is approximately 100 milligrams per day. Unfortunately, chloride is found commonly combined with undesirable dietary sources. The most common of these negative sources is table salt. Table salt is made from a combination of sodium and chloride ions. Other unhealthful sources include yeast extracts, processed lunchmeats, and cheeses. Healthier sources of chloride include kelp (seaweed), ionic trace minerals, olives, rye, tomatoes, lettuce, and celery, although not in large enough amounts to supply the needs of an active adult.6 In its original form, however, chloride is leached from various rocks into soil and water by years of weathering processes. The chloride ion is highly mobile and is transported to closed basins, such as the Great Salt Lake, or oceans