The central paradigm is that an individual's chronotype constitutes a fundamental metabolic phenotype, predictive of daily patterns in nutrient metabolism, hormonal secretion, and energy homeostasis. This phenotype emerges from a hierarchical network of circadian clocks, spanning from the central brain clock to peripheral oscillators in metabolic organs like the liver and gut. The timing of food intake acts as a potent synchronizer for this system; when misaligned with the endogenous chronotype, it can precipitate metabolic dysfunction, whereas aligned chrono-nutrition reinforces metabolic coherence. Thus, true dietary personalization necessitates moving beyond static composition to dynamic timing, strategically aligning eating windows with an individual's unique circadian rhythm to optimize health.
Chen et al. (Sun,) studied this question.