Functional food for ameliorating endogenous melatonin secretion rhythm and functional food for ameliorating circadian rhythm

摘要

Disclosed are agents for phase-adjusting or enhancing the amplitude of an endogenous melatonin secretion rhythm and for improving a circadian rhythm, as well as functional food containing such an agent, which may prevent or ameliorate various symptoms, such as sleep disorder or prolonged sleep latency. The agent contains whey as the active component.