Journal of Biological Rhythms,
Journal Year:
2021,
Volume and Issue:
37(1), P. 3 - 28
Published: Dec. 30, 2021
The
various
non-standard
schedules
required
of
shift
workers
force
abrupt
changes
in
the
timing
sleep
and
light-dark
exposure.
These
result
disturbances
endogenous
circadian
system
its
misalignment
with
environment.
Simulated
night-shift
experiments
field-based
studies
both
indicate
that
is
resistant
to
adaptation
from
a
day-
night-oriented
schedule,
as
determined
by
lack
substantial
phase
shifts
over
multiple
days
centrally
controlled
rhythms,
such
those
melatonin
cortisol.
There
evidence
disruption
caused
work
results
not
only
between
external
cycle,
but
also
state
internal
desynchronization
levels
system.
This
case
rhythms
central
pacemaker
clock
genes
expression
tissues
peripheral
blood
mononuclear
cells,
hair
follicle
oral
mucosa
cells.
disruptive
effects
atypical
extend
beyond
profile
canonical
affects
other
transcripts
human
genome.
In
general,
after
several
living
at
night,
most
rhythmic
genome
remain
adjusted
day-oriented
dampened
group
amplitudes.
contrast
transcripts,
metabolomics
revealed
metabolites
hours
when
working
nights,
thus
leading
their
Altogether,
these
sleep-wake
emphasize
all-encompassing
impact
work,
can
contribute
increased
risk
medical
conditions.
Here,
we
review
latest
scientific
regarding
on
system,
alertness
shift-working
populations,
discuss
potential
clinical
impacts.
Frontiers in Nutrition,
Journal Year:
2020,
Volume and Issue:
7
Published: April 17, 2020
The
molecular
circadian
clock
regulates
metabolic
processes
within
the
cell,
and
alignment
of
these
clocks
between
tissues
is
essential
for
maintenance
homeostasis.
possibility
misalignment
arises
from
differential
responsiveness
to
environmental
cues
that
synchronize
(zeitgebers).
Although
light
dominant
cue
master
suprachiasmatic
nucleus,
many
other
are
sensitive
feeding
fasting.
When
rhythms
behaviour
altered,
example
by
shift
work
or
constant
availability
highly
palatable
foods,
strong
feedback
sent
peripheral
clocks.
Varying
degrees
phase
can
cause
systemic
processes.
Moreover,
when
there
a
endogenous
in
physiology
inputs,
such
as
during
inactive
phase,
body's
ability
maintain
homeostasis
impaired.
loss
coordination
organism
environment,
well
internal
tissues,
produce
cardiometabolic
disease
consequence.
aim
this
review
synthesize
on
mechanisms
effects
misalignment.
timing
food
intake
highlighted
powerful
with
potential
destroy
restore
synchrony
metabolism.
Cell Metabolism,
Journal Year:
2022,
Volume and Issue:
34(10), P. 1442 - 1456.e7
Published: Oct. 1, 2022
Over
a
quarter
of
the
workforce
in
industrialized
countries
does
shift
work,
which
increases
risk
for
cardiometabolic
disease.
Yet
workers
are
often
excluded
from
lifestyle
intervention
studies
to
reduce
this
risk.
In
randomized
control
trial
with
137
firefighters
who
work
24-h
shifts
(23-59
years
old,
9%
female),
12
weeks
10-h
time-restricted
eating
(TRE)
was
feasible,
TRE
participants
decreasing
their
window
(baseline,
mean
14.13
h,
95%
CI
13.78-14.47
h;
intervention,
11.13
10.73-11.54
p
=
3.29E-17)
no
adverse
effects,
and
improved
quality
life
assessed
via
SF-36
(ClinicalTrials.gov:
NCT03533023).
Compared
standard
care
(SOC)
arm,
significantly
decreased
VLDL
particle
size.
elevated
risks
at
baseline,
there
were
significant
reductions
compared
SOC
glycated
hemoglobin
A1C
diastolic
blood
pressure.
For
individuals
working
schedule,
is
feasible
can
improve
health,
especially
increased
VIDEO
ABSTRACT.
Clocks & Sleep,
Journal Year:
2020,
Volume and Issue:
2(1), P. 61 - 85
Published: Feb. 28, 2020
Daylight
stems
solely
from
direct,
scattered
and
reflected
sunlight,
undergoes
dynamic
changes
in
irradiance
spectral
power
composition
due
to
latitude,
time
of
day,
year
the
nature
physical
environment
(reflections,
buildings
vegetation).
Humans
their
ancestors
evolved
under
these
natural
day/night
cycles
over
millions
years.
Electric
light,
a
relatively
recent
invention,
interacts
competes
with
light–dark
cycle
impact
human
biology.
What
are
consequences
living
industrialised
urban
areas
much
less
daylight
more
use
electric
throughout
day
(and
at
night),
on
general
health
quality
life?
In
this
workshop
report,
we
have
classified
key
gaps
knowledge
research
into
three
main
groups:
(I)
uncertainty
as
quantity
needed
for
“optimal”
physiological
psychological
functioning,
(II)
lack
consensus
practical
measurement
assessment
methods
tools
monitoring
real
(day)
light
exposure
across
multiple
scales,
(III)
insufficient
integration
exchange
bases
different
disciplines.
Crucial
short
long-term
objectives
fill
proposed.