To say that stress can affect proper sleep
patterns seems obvious, but new research has found that sleep disturbances are
directly related to increased sensitivity to arousal-producing stress hormones
such as cortisol. Researchers compared patients with insomnia to those without
sleep disturbances and they found that insomniacs with the highest degrees of
sleep disturbance secreted the highest amount of cortisol, particularly in the
evening and nighttime hours.
Cortisol is excitatory; it arouses us, wakes us
up and leaves us primed for action long after the trigger stressor has been
subdued. However, when as a result of prolonged stress, cortisol levels get stuck
at higher levels and never come down and give the adrenal gland a chance to recharge for the
next stress alarm response. Chronically high cortisol from overloaded adrenals
is bad news for a good night's sleep.
What happens when you don't get a good night's
sleep? Perhaps you'll be okay if it's just one night but many nights in a week
quickly pile up and throw off our delicate Circadian rhythm that is intertwined
with our cortisol, serotonin and melatonin levels. Serotonin and melatonin
govern our appetite and our mood . If fluctuations in our sleep cycle cause us
to overeat (which cortisol is known to do) or eat at erratic times, keeping a
level head becomes difficult.
Our mood rises and falls with drastic dips in
blood sugar, followed by sugar or fat binges. Poor eating habits, an additional
stress on adrenal glands, perpetuate the adrenal alarm response encouraging
cortisol levels to stay high. This, of course, gets us right back to that
restless, keyed up feeling at bedtime.
While it may feel like you're caught in a
vicious cycle of stress, sleep deprivation, poor nutrition and mood swings, it
is possible to break free of the cycle at any of its check points. For example,
make a point to eat a nutritious breakfast every morning at the same time and
include protein to prevent blood sugar dips later in the day.
If you have a habit of watching the news
before bed, create a new routine and opt for a relaxing bath or series of yoga
stretches to help your mind and body relax before you turn in. Stress is a fact
of life, but it does not have to rule your life.
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References
Julie Daniluk's Adrenal Connection Book.