Wild celery can be found throughout Europe, the Mediterranean, and parts of Asia. The leaves, stalks, root, and seeds can be eaten. In western cuisine, the stalks of its domesticated cousin are commonly used in cooking and may be eaten raw alone or in salads, or as a cooked ingredient in various recipes. Celery seed has also been used as a diuretic (increase urine flow) and to treat gout (foot inflammation). However, there is insufficient evidence in humans to support the use of celery for any indication.

Allergy to celery is fairly common, as celery contains an allergen similar to the birch pollen allergen. Both raw and cooked celery can cause reactions that range from contact dermatitis to anaphylactic shock.

The ancient Greeks and Egyptians cultivated celery, which was probably originally used as a medicine. Some Egyptian tombs also contained celery leaves and flowers.

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These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.

Mosquito repellent (Grade: C)
Celery extract may be an effective mosquito repellent. Although this study is promising, additional study is needed in this area.