Chrono-nutrition: From molecular and neuronal mechanisms to human epidemiology and timed feeding patterns.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanisms, animal research, and human studies without systematic review methods.
PubMed 33222161 · doi:10.1111/jnc.15246
What was done
This narrative review synthesized evidence across molecular biology, animal models, human epidemiology, and clinical intervention trials on how circadian clocks regulate metabolism and how meal timing (chrono-nutrition, including morning versus evening energy distribution and time-restricted feeding) influences metabolic outcomes.
What was found
The abstract provides no numerical data, effect estimates, or sample sizes. It qualitatively describes that circadian misalignment causes adverse metabolic outcomes, whereas synchronizing eating patterns with circadian rhythms—particularly by distributing energy intake earlier in the day—optimizes glucose homeostasis, lipid metabolism, insulin sensitivity, and energy expenditure.
Why it matters
It provides a mechanistic and translational framework for using meal timing as an adjunct behavioural strategy for metabolic disease prevention and management.
Limits
As a narrative review, it lacks a systematic search protocol, risk of bias appraisal, or meta-analytic quantification. The abstract synthesizes animal and human data together without providing specific study counts, sample sizes, or effect magnitudes.
Cited by
- supports Circadian rhythms in humans are regulated not only by light exposure but also by the timing of food intake.