PURPOSE: The titled food for adjusting the rhythm, consisting essentially of a plant extract saponin extracted from a specific plant, e.g. ginseng, Bupleurum root, etc., and capable of always adjusting the hormone intraday rhythm normal, and eliminating general malaise etc. by eating.

CONSTITUTION: A food for adjusting the hormone intraday rhythm consisting essentially of a plant extract saponin extracted from ginseng, at least one of ginseng, Bupleurum root, watermelon, dishcloth gourd and Gynostemma pentaphyllum Makino. The above-mentioned food is capable of eliminating general malaise, e.g. stiffness in the shoulders, irritation, pollakiuria, etc. caused by imbalance in hormone secretion rhythm, and eatable for a long period without resistance. The above-mentioned saponin extract usually may be an optional form for taking in 20W1,000mg/day as powder.