Celery (芹菜 Qin cai)
Crunchy celery is high in fiber and rich in vitamins K, C, B, iron, potassium and other elements. Celery is known as a negative-calorie food because it takes more calories to digest than it contains.
It is well known as a laxative.
TCM classifies celery as a "cold" (yin energy) food that helps dispel pathogenic heat, soothe the liver, relieve bleeding and promote urination.
Celery is now widely recommended for high-blood pressure patients as it contains phthalides, which help relax muscles around the arteries and reduce production of stress hormones. It contains some sodium so that should be taken into account.
Modern research shows celery is helpful in reducing swelling through its diuretic effect. Iron-rich celery can help women replenish iron lost in menstrual bleeding.
People suffering from diarrhea should avoid celery temporarily.