Meal timing relative to DLMO: Associations with BMI and body fat

Elizabeth Culnan; Kathryn J. Reid; Phyllis C. Zee; Stephanie J. Crowley; Kelly G. Baron

doi:10.1016/j.sleh.2021.01.001

Meal timing relative to DLMO: Associations with BMI and body fat

Elizabeth Culnan, Kathryn J. Reid, Phyllis C. Zee, Stephanie J. Crowley, Kelly G. Baron^*

^*Corresponding author for this work

Neurology

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Background: Timing of eating relative to the dim light melatonin onset (DLMO) may serve as a modifiable risk factor for adverse cardiometabolic outcomes. The primary aim of this study was to examine whether the timing of eating relative to DLMO is associated with body mass index (BMI), body fat, and diet in healthy adults without the confound of sleep deprivation. Methods: Healthy men and women (N = 97), ages 18-50, with a habitual sleep duration of ≥6.5 hours and ≤8.5 hours completed 7 days of actigraphy and daily sleep and food diaries. Participants underwent a dual-energy X-ray absorptiometry scan and blood draws to assess DLMO in the clinical research unit. Results: A shorter duration between DLMO and the average clock time of the last meal (last meal-DLMO) was related to a higher number of meals consumed, b = 0.25, SE_b = 0.06, P<.001, longer feeding duration, b = 0.84, SE_b = 0.06, P<.001, greater carbohydrate intake, b = 9.08, SE_b = 3.55, P=.01, and greater sugar intake, b = 4.73, SE_b = 1.83, P=.01. Last meal-DLMO was not associated with BMI in the full sample; however, among those with later DLMO (after 10:30 PM) last meal-DLMO was related to higher BMI, b = 0.92, SE_b = 0.36, P=.02. Conclusion: These results suggest that timing of last meal relative to DLMO may serve as a marker of circadian misalignment and that eating the last meal closer to DLMO may negatively impact dietary habits.

Original language	English (US)
Pages (from-to)	339-344
Number of pages	6
Journal	Sleep Health
Volume	7
Issue number	3
DOIs	https://doi.org/10.1016/j.sleh.2021.01.001
State	Published - Jun 2021

Funding

Research reported in this publication was supported in part by the National Institutes of Health's National Heart Lung and Blood Institute 1K23HL109110-01 (KGB), 1R01HL141706-01A1 (KGB) and the National Center for Advancing Translational Sciences , grant number UL1TR001422 . The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health .

Keywords

Body composition
Diet
Melatonin

ASJC Scopus subject areas

Health(social science)
Neuropsychology and Physiological Psychology
Behavioral Neuroscience
Social Sciences (miscellaneous)

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10.1016/j.sleh.2021.01.001

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@article{a2945752302940ae8e8ebb0e66fbe7a7,

title = "Meal timing relative to DLMO: Associations with BMI and body fat",

abstract = "Background: Timing of eating relative to the dim light melatonin onset (DLMO) may serve as a modifiable risk factor for adverse cardiometabolic outcomes. The primary aim of this study was to examine whether the timing of eating relative to DLMO is associated with body mass index (BMI), body fat, and diet in healthy adults without the confound of sleep deprivation. Methods: Healthy men and women (N = 97), ages 18-50, with a habitual sleep duration of ≥6.5 hours and ≤8.5 hours completed 7 days of actigraphy and daily sleep and food diaries. Participants underwent a dual-energy X-ray absorptiometry scan and blood draws to assess DLMO in the clinical research unit. Results: A shorter duration between DLMO and the average clock time of the last meal (last meal-DLMO) was related to a higher number of meals consumed, b = 0.25, SEb = 0.06, P<.001, longer feeding duration, b = 0.84, SEb = 0.06, P<.001, greater carbohydrate intake, b = 9.08, SEb = 3.55, P=.01, and greater sugar intake, b = 4.73, SEb = 1.83, P=.01. Last meal-DLMO was not associated with BMI in the full sample; however, among those with later DLMO (after 10:30 PM) last meal-DLMO was related to higher BMI, b = 0.92, SEb = 0.36, P=.02. Conclusion: These results suggest that timing of last meal relative to DLMO may serve as a marker of circadian misalignment and that eating the last meal closer to DLMO may negatively impact dietary habits.",

keywords = "Body composition, Diet, Melatonin",

author = "Elizabeth Culnan and Reid, {Kathryn J.} and Zee, {Phyllis C.} and Crowley, {Stephanie J.} and Baron, {Kelly G.}",

note = "Publisher Copyright: {\textcopyright} 2021 National Sleep Foundation",

year = "2021",

month = jun,

doi = "10.1016/j.sleh.2021.01.001",

language = "English (US)",

volume = "7",

pages = "339--344",

journal = "Sleep Health",

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publisher = "Elsevier Inc.",

number = "3",

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T1 - Meal timing relative to DLMO

T2 - Associations with BMI and body fat

AU - Culnan, Elizabeth

AU - Reid, Kathryn J.

AU - Zee, Phyllis C.

AU - Crowley, Stephanie J.

AU - Baron, Kelly G.

PY - 2021/6

Y1 - 2021/6

N2 - Background: Timing of eating relative to the dim light melatonin onset (DLMO) may serve as a modifiable risk factor for adverse cardiometabolic outcomes. The primary aim of this study was to examine whether the timing of eating relative to DLMO is associated with body mass index (BMI), body fat, and diet in healthy adults without the confound of sleep deprivation. Methods: Healthy men and women (N = 97), ages 18-50, with a habitual sleep duration of ≥6.5 hours and ≤8.5 hours completed 7 days of actigraphy and daily sleep and food diaries. Participants underwent a dual-energy X-ray absorptiometry scan and blood draws to assess DLMO in the clinical research unit. Results: A shorter duration between DLMO and the average clock time of the last meal (last meal-DLMO) was related to a higher number of meals consumed, b = 0.25, SEb = 0.06, P<.001, longer feeding duration, b = 0.84, SEb = 0.06, P<.001, greater carbohydrate intake, b = 9.08, SEb = 3.55, P=.01, and greater sugar intake, b = 4.73, SEb = 1.83, P=.01. Last meal-DLMO was not associated with BMI in the full sample; however, among those with later DLMO (after 10:30 PM) last meal-DLMO was related to higher BMI, b = 0.92, SEb = 0.36, P=.02. Conclusion: These results suggest that timing of last meal relative to DLMO may serve as a marker of circadian misalignment and that eating the last meal closer to DLMO may negatively impact dietary habits.

AB - Background: Timing of eating relative to the dim light melatonin onset (DLMO) may serve as a modifiable risk factor for adverse cardiometabolic outcomes. The primary aim of this study was to examine whether the timing of eating relative to DLMO is associated with body mass index (BMI), body fat, and diet in healthy adults without the confound of sleep deprivation. Methods: Healthy men and women (N = 97), ages 18-50, with a habitual sleep duration of ≥6.5 hours and ≤8.5 hours completed 7 days of actigraphy and daily sleep and food diaries. Participants underwent a dual-energy X-ray absorptiometry scan and blood draws to assess DLMO in the clinical research unit. Results: A shorter duration between DLMO and the average clock time of the last meal (last meal-DLMO) was related to a higher number of meals consumed, b = 0.25, SEb = 0.06, P<.001, longer feeding duration, b = 0.84, SEb = 0.06, P<.001, greater carbohydrate intake, b = 9.08, SEb = 3.55, P=.01, and greater sugar intake, b = 4.73, SEb = 1.83, P=.01. Last meal-DLMO was not associated with BMI in the full sample; however, among those with later DLMO (after 10:30 PM) last meal-DLMO was related to higher BMI, b = 0.92, SEb = 0.36, P=.02. Conclusion: These results suggest that timing of last meal relative to DLMO may serve as a marker of circadian misalignment and that eating the last meal closer to DLMO may negatively impact dietary habits.

KW - Body composition

KW - Diet

KW - Melatonin

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SN - 2352-7218

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EP - 344

JO - Sleep Health

JF - Sleep Health

IS - 3

ER -

Meal timing relative to DLMO: Associations with BMI and body fat

Abstract

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Keywords

ASJC Scopus subject areas

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