How many hours of sleep are you getting per night on a regular basis? If it is less than 8 to 9 hours in total darkness, then you are likely paying the price. Research on sleep deprivation consistently shows a negative impact on mood, mental sharpness and physical dexterity, with mood being the most affected of the three. Sleep loss has also been shown to affect your metabolism and can increase the risk of obesity as it changes how your body processes and stores carbohydrates, and it alters levels of hormones that affect your appetite.
Rest Time is Healing Time!
It is during deep sleep (and meditation) that your body's natural intelligence can take over and do the healing, cleansing, restoring, rebuilding and rejuvenating work the body desperately needs to create or maintain a healthy state - so proper sleep is even more important for cancer patients and thrivers.
Impact on the immune system
Importantly, studies have also shown the impact of partial sleep deprivation (when the subject is deprived of only one stage of sleep) on the immune system. Here is a quote from a study published in the in 1996 (FASB Journal 10):
These data implicate sleep in the modulation of immunity and demonstrate that even a modest disturbance of sleep produces a reduction of natural immune responses and T cell cytokine production.
The study focused on loss of sleep during the all important early part of the night (10pm and 3am) and showed the suppression of natural killer cell activity, both as it relates to the number of cells and the functioning of the cells. Thankfully, the levels returned to normal after a recovery night sleep.
Key Sleep Periods
Normally, the body starts to secrete melatonin, a powerful neurotransmitter, between 9:30 and 10:30pm - but only if there is darkness as its production stops when you are exposed to light - and reaches a peak from 1 to 2am (this will vary by individual and decreases with age). So if you are always watching TV, reading or on your computer between 9:30 and 10:30pm, then your pineal gland will not secrete melatonin and you may not to feel sleepy, even if your body needs the rest!
Melatonin Rocks!
The benefits of melatonin are quite incredible - it is a very powerful antioxidant, it boosts the immune system, helps with memory and is a major influencer in the modulation of estrogen. When melatonin production is low, for example due to night-time light exposure, it cannot play its important role of decreasing night-time production of estrogen (a sex hormone produced by men and women). Steriodal estrogen (used in hormonal replacement therapy) is now listed as a known human carcinogen and plays a role in the development of several types of cancer (1). So low levels of melatonin resulting in higher levels of estrogen could be increasing your risk of cancer or slowing your recovery if you are being treated for an estrogen related cancer.
By continually going to sleep after 10:30pm you are creating conditions similar to jet lag because your sleep/wake cycle becomes out of sync with the natural circadian rhythms that are controlled by the dark and light phases of a 24 hour period. This means you are throwing off the hormonal cycles of many important functions in the body.
Liver Detox Work
The two hours before midnight are when the liver is doing some major detoxing and if it is not able to do its job effectively, because you are not sleeping or you ate a big meal just before going to sleep, many functions of the body are negatively impacted. Toxins can accumulate causing other health challenges such as chronic inflammation which is now linked to many diseases including cancer and heart disease.
12 Tips for Restorative Sleep:
Bonne Nuit!
Jackie