Is body weight affected by when you eat? Here’s what science knows so far

Alexandra Johnstone, Leonie Ruddick-Collins

Research output: Contribution to specialist publicationArticle


Most diet and health advice is broadly based on the assumption that a calorie is a calorie (and it doesn’t matter when they’re consumed). But some research suggests that our bodies actually use calories more efficiently when consumed in the morning as opposed to the evening. This points to a strategy that could be beneficial for weight loss.
Original languageEnglish
Specialist publicationThe Conversation
PublisherThe Conversation UK
Publication statusPublished - 17 Aug 2020

Bibliographical note

Alex Johnstone receives funding from the Medical Research Council, The University of Aberdeen, The Scottish Government, Biological Sciences Research Council, Economic and Social Research Council, Engineering and Physical Sciences Research Council, National Health Service Endowments award, Tennovus Charity, Chief Scientist Office and European Community.

Leonie Ruddick-Collins does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.


  • Weight loss
  • Body clock
  • Intermittent fasting
  • Metabolism
  • Appetite
  • body weight
  • Circadian rhythm


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