May help support blood cleansing. The leaves and stem of the fresh celery plant are presses to obtain celery juice, this is because nutrients are contained in all parts of the plant. Celery juice contains calcium iron, phophorous, potassium, pure water, vitamins A and B together with alkaline ash, chloride minerals and chlorophyll. Celery has several different effects on the body but primarily it gently stimulates the digestive system and also has a mild diuretic effect to support detoxification.