Saturday, July 2, 2022
Cold Thermogenesis

The Metabolic Harms of Night Shifts and Irregular Meals

What shift workers can do to moderate the adverse effects of circadian rhythm disruption.

Subscribe to’s free newsletter to receive our B12 infographic that covers the latest research takeaways and Dr. Greger’s updated recommendations:

We are winding down this series on chronobiology. Just two videos left in this series: Shedding Light on Shedding Weight ( and Why People Gain Weight in the Fall (

If you missed any of the earlier ones, see:
• Is Breakfast the Most Important Meal for Weight Loss? (
• Is Skipping Breakfast Better for Weight Loss? (
• Chronobiology – How Circadian Rhythms Can Control Your Health and Weight (
• Eat More Calories in the Morning to Lose Weight (
• Breakfast Like a King, Lunch Like a Prince, Dinner Like a Pauper (
• Eat More Calories in the Morning Than the Evening (
• How Circadian Rhythms Affect Blood Sugar Levels (
• How to Sync Your Central Circadian Clock to Your Peripheral Clocks (

Have a question about this video? Leave it in the comment section at and someone on the team will try to answer it.

Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.

If you’d rather watch these videos on YouTube, subscribe to my YouTube Channel here:

Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM

Captions for this video are available in several languages. To find yours, click on the settings wheel on the lower-right of the video and then “Subtitles/CC.”
Do you have feedback about the translations in this video? Please share it here along with the title of the video and language:
• Subscribe:
• Donate:
• Podcast :
• Facebook:
• Twitter:
• Instagram:
• Books (including the NEW How Not to Diet Cookbook):
• Shop:


Similar Posts

29 thoughts on “The Metabolic Harms of Night Shifts and Irregular Meals

  2. Thanks for the info. I have never worked a night shift but know humans who have, it really messed up their lives. They were
    very happy when they went to a day shift, but it took them three months to get used to it again. I am a night eater, but feel and sleep much better when I have an early dinner.

  3. I work on the railroad and it’s pretty tough. I can get to bed at 2 am one day and the next I have to get up at 3 am. I’m trying hard to keep my meals consistent though. I’m not sure I can keep this going for 30 more years but I’m glad I have a job that it’s interesting.
    Many of my colleagues keeps putting in the pounds even though our job is fairly active.

  4. would love to see more videos on night shift workers. i just started a new job as a nurse working three 12 hour shifts per week (not always consecutive)

  5. This video, like others from Dr Gregor, lacks recommendations for a "path forward". In this video, he presents peer-reviewed evidence that irregularly timed eating causes all kinds of serious problems but then doesn't tell you what to do about it. Maybe he'll let us know in his next book.

  6. Some people can’t help this. They have to work what they get. So great to know I’ll die soon too. You’ve obviously never worked a night shift if you can so easily say not to eat at night. Then you won’t be eating at all because you are ASLEEP during the day.

  7. So if I understand re: nightshift, I should aim to have a wholesome meal incl vegetable soup before 7pm, and stave off food during nightshift and choose a healthy breakfast after nightshift

Leave a Reply

Your email address will not be published.