Journal of the American Heart Association,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 23, 2025
The
circadian
system
maintains
optimal
biological
functions
at
the
appropriate
time
of
day,
and
disruption
this
organization
can
contribute
to
pathogenesis
cardiometabolic
disorders.
timing
eating
is
a
prominent
external
cue
that
influences
system.
“Chrononutrition”
an
emerging
dimension
nutrition
active
area
research
examines
how
timing‐related
aspects
impact
rhythms,
processes,
disease
pathogenesis.
There
evidence
support
chrononutrition
as
form
chronotherapy,
such
optimizing
may
serve
actionable
strategy
improve
health.
This
report
summarizes
key
information
from
National
Heart,
Lung,
Blood
Institute's
virtual
workshop
entitled
“Chrononutrition:
Elucidating
Role
Circadian
Biology
Meal
Timing
in
Cardiometabolic
Health,”
which
convened
on
May
2
3,
2023,
review
current
literature
identify
critical
knowledge
gaps
opportunities.
speakers
presented
highlighting
health
earlier
shorter
windows
more
consistent
day‐to‐day
patterns.
multidimensionality
was
common
theme,
it
encompasses
multiple
facets
along
with
other
behaviors
including
sleep
physical
activity.
Advancing
field
will
require:
(1)
standardization
terminology
metrics;
(2)
scalable
precise
tools
for
real‐world
settings;
(3)
consideration
individual
differences
act
effect
modifiers;
(4)
deeper
understanding
social,
behavioral,
cultural
influences.
Ultimately,
there
great
potential
circadian‐based
dietary
interventions
JAMA Internal Medicine,
Journal Year:
2022,
Volume and Issue:
182(9), P. 953 - 953
Published: Aug. 8, 2022
Importance
It
is
unclear
how
effective
intermittent
fasting
for
losing
weight
and
body
fat,
the
effects
may
depend
on
timing
of
eating
window.
This
randomized
trial
compared
time-restricted
(TRE)
with
over
a
period
12
or
more
hours
while
matching
weight-loss
counseling
across
groups.
Objective
To
determine
whether
practicing
TRE
by
early
in
day
(eTRE)
loss,
fat
cardiometabolic
health
than
hours.
Design,
Setting,
Participants
The
study
was
14-week,
parallel-arm,
clinical
conducted
between
August
2018
April
2020.
Participants
were
adults
aged
25
to
75
years
obesity
who
received
treatment
through
Weight
Loss
Medicine
Clinic
at
University
Alabama
Birmingham
Hospital.
Interventions
All
participants
(energy
restriction
[ER])
eTRE
plus
ER
(8-hour
window
from
7:00
15:00)
control
(CON)
(≥12-hour
window).
Main
Outcomes
Measures
co–primary
outcomes
loss
loss.
Secondary
included
blood
pressure,
heart
rate,
glucose
levels,
insulin
plasma
lipid
levels.
Results
Ninety
enrolled
(mean
[SD]
mass
index,
39.6
[6.7];
age,
43
[11]
years;
72
[80%]
female).
eTRE+ER
group
adhered
6.0
(0.8)
days
per
week.
intervention
(−2.3
kg;
95%
CI,
−3.7
−0.9
kg;P
=
.002)
but
did
not
affect
(−1.4
−2.9
0.2
.09)
ratio
(−4.2%;
−14.9
6.5%;P
.43).
equivalent
reducing
calorie
intake
an
additional
214
kcal/d.
also
improved
diastolic
pressure
(−4
mm
Hg;
−8
0
Hg;P
.04)
mood
disturbances,
including
fatigue-inertia,
vigor-activity,
depression-dejection.
other
risk
factors,
food
intake,
physical
activity,
sleep
similar
In
secondary
analysis
59
completers,
trunk
CON+ER.
Obesity,
Journal Year:
2022,
Volume and Issue:
30(5), P. 1027 - 1038
Published: April 26, 2022
This
trial
aimed
to
evaluate
the
acceptability
and
efficacy
of
early
time-restricted
eating
plus
daily
caloric
restriction
(E-TRE+DCR)
compared
with
DCR
alone
within
a
behavioral
weight-loss
intervention.Participants
(n
=
81,
69
women,
mean
[SD]
age:
38.0
[7.8]
years,
BMI:
34.1
[5.7]
kg/m2
)
were
randomized
E-TRE
(10-hour
window
starting
3
hours
waking)
or
(~35%
DCR)
for
39
weeks.
The
primary
outcome
was
body
weight
(measured
digital
scale)
at
week
12.
Secondary
outcomes
measured
12
included
hemoglobin
A1c,
lipids,
energy
intake
(photographic
food
records),
physical
activity
(accelerometry),
dietary
adherence
(questionnaires),
composition
(dual-energy
x-ray
absorptiometry).
Weight
also
assessed
39.Mean
loss
not
different
between
groups
(E-TRE+DCR:
-6.2
[4.1]
kg
vs.
DCR:
-5.1
[3.2]
kg)
(E-TRE:
-4.9
[5.3]
-4.3
kg).
There
no
between-group
differences
in
changes
composition,
adherence,
intake,
activity,
lipids
12.E-TRE+DCR
found
be
an
acceptable
strategy,
resulting
similar
levels
alone.
Journal of Sleep Research,
Journal Year:
2022,
Volume and Issue:
31(4)
Published: June 7, 2022
Summary
The
field
of
“circadian
medicine”
is
a
recent
addition
to
chronobiology
and
sleep
research
efforts.
It
represents
logical
step
arising
from
the
increasing
insights
into
circadian
system
its
interactions
with
life
in
urbanised
societies;
applying
these
health/disease
balance
at
home
medical
practice
(outpatient)
clinic
(inpatient).
Despite
fast
expansion
proliferating
efforts,
medicine
lacks
formal
framework
categorise
many
observations
describing
among
system,
sleep,
balance.
A
good
allows
us
then
assign
them
one
or
more
components
hypothesised
interactions.
Such
assignments
can
lead
experiments
that
document
causal
(rather
than
correlational)
relationships
move
discovering
mechanisms.
This
review
details
such
proposed
for
will
hopefully
trigger
discussion
our
colleagues,
so
be
improved
expanded.
As
basis
medicine,
we
define
health”
how
it
links
general
health.
We
put
context
literature
examples
six
domains
balance:
fertility,
cancer,
immune
mental
health,
cardiovascular,
metabolism.
Physiological Reviews,
Journal Year:
2022,
Volume and Issue:
102(4), P. 1991 - 2034
Published: July 14, 2022
Time-restricted
eating
(TRE)
is
a
dietary
intervention
that
limits
food
consumption
to
specific
time
window
each
day.
The
effect
of
TRE
on
body
weight
and
physiological
functions
has
been
extensively
studied
in
rodent
models,
which
have
shown
considerable
therapeutic
effects
important
interactions
among
eating,
circadian
biology,
metabolic
homeostasis.
In
contrast,
it
difficult
make
firm
conclusions
regarding
the
people
because
heterogeneity
results,
regimens,
study
populations.
this
review,
we
1)
provide
background
history
meal
normal
physiology
fasting;
2)
discuss
interaction
between
molecular
metabolism
TRE;
3)
integrate
results
preclinical
clinical
studies
evaluated
functions;
4)
summarize
other
time-related
interventions
people;
identify
current
gaps
knowledge
framework
for
future
research
directions.
Clocks & Sleep,
Journal Year:
2023,
Volume and Issue:
5(3), P. 507 - 535
Published: Sept. 6, 2023
Achieving
synchronization
between
the
central
and
peripheral
body
clocks
is
essential
for
ensuring
optimal
metabolic
function.
Meal
timing
an
emerging
field
of
research
that
investigates
influence
eating
patterns
on
our
circadian
rhythm,
metabolism,
overall
health.
This
narrative
review
examines
relationship
meal
timing,
clock
genes,
hormones,
It
analyzes
existing
literature
experimental
data
to
explore
connection
mealtime,
rhythms,
processes.
The
available
evidence
highlights
importance
aligning
mealtime
with
body’s
natural
rhythms
promote
health
prevent
disorders.
Specifically,
studies
show
consuming
meals
later
in
day
associated
elevated
prevalence
disorders,
while
early
time-restricted
eating,
such
as
having
breakfast
earlier
dinner,
improves
levels
glucose
blood
substrate
oxidation.
Circadian
including
cortisol
melatonin,
interact
mealtimes
play
vital
roles
regulating
Cortisol,
aligned
dawn
diurnal
mammals,
activates
energy
reserves,
stimulates
appetite,
influences
gene
expression,
synchronizes
clocks.
Consuming
during
periods
melatonin
levels,
specifically
night,
has
been
correlated
potential
implications
tolerance.
Understanding
mechanisms
synchronization,
genetics,
interactions
chronotype,
sleep
duration,
hormonal
changes,
provides
valuable
insights
optimizing
dietary
strategies
timing.
knowledge
contributes
improved
well-being
by
rhythm.
Journal of Pineal Research,
Journal Year:
2024,
Volume and Issue:
76(4)
Published: May 1, 2024
Abstract
The
circadian
timing
system
controls
glucose
metabolism
in
a
time‐of‐day
dependent
manner.
In
mammals,
the
consists
of
main
central
clock
bilateral
suprachiasmatic
nucleus
(SCN)
anterior
hypothalamus
and
subordinate
clocks
peripheral
tissues.
oscillations
produced
by
these
different
with
period
approximately
24‐h
are
generated
transcriptional‐translational
feedback
loops
set
core
genes.
Glucose
homeostasis
is
one
daily
rhythms
controlled
this
system.
pacemaker
SCN
through
its
neural
projections
to
hypothalamic
hubs
that
control
feeding
behavior
energy
metabolism.
Using
hormones
such
as
adrenal
glucocorticoids
melatonin
autonomic
nervous
system,
modulates
critical
processes
production
insulin
sensitivity.
Peripheral
tissues,
liver,
muscle,
adipose
tissue
serve
enhance
sustain
signals.
optimal
situation
all
synchronized
aligned
environmental
light/dark
cycle.
A
negative
impact
on
becomes
apparent
when
internal
disturbed,
also
known
desynchrony
or
misalignment.
Circadian
may
occur
at
several
levels,
mistiming
light
exposure
sleep
will
especially
affect
clock,
whereas
food
intake
physical
activity
involve
clocks.
review,
we
summarize
literature
investigating
how
it
result
development
resistance.
addition,
discuss
potential
strategies
aimed
reinstating
synchrony
improve
sensitivity
contribute
prevention
type
2
diabetes.