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How "Springing Forward" Our Clocks Can Alter Sleep Patterns!

4/13/2013

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Now that daylight savings time has come, we have been springing forward our clocks to enjoy longer days of sunshine, at the expense of one hour of sleep. For some, this transition isn’t easy. Your body naturally functions on its own biological internal 24-hour cycle called the ‘circadian rhythm’. It regulates when you should get up and when you should get sleepy, sometimes being referred to as the sleep-wake cycle. While it is a self-sustained system (endogenous) relying on factors such as brain waves, body temperature and hormone production, it can be adjusted by external factors (entrained), the most important being daylight.

Light and melatonin production go hand in hand. Melatonin is, or at least should be, quite low throughout the day. It is a hormone made by a small gland in the center of the brain called the pineal gland via a process called the dim light melatonin onset. In a simple explanation, light (primarily blue light) suppresses melatonin production throughout the day.  Darkness, or more accurately the absence of blue light to the retina of the eye, favors the pineal gland’s production of melatonin.  The rise of melatonin in the evening when daylight fades makes the brain drowsy and ready for sleep. It is important to note that melatonin production is not the only factor to consider in influencing the daily circadian rhythm. The central nervous system is paramount in regulating our internal clock along with the regulation of many other hormones of our endocrine system. In any case, changing the time on the clock undoubtedly alters daylight patterns and can wreak havoc on the sleep-wake cycle your body tries so hard to maintain. Your body is forced to reset its 24-hour cycle which will temporarily be out of sync. It will need to work a little harder to adapt to this change. During these transitional times, it is very important to have a healthy sleep hygiene routine, including dim lighting and calming activities, to help you relax before bedtime, enhance your sleep quality and improve melatonin production.

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Omega-3 Fatty Acids: Fish Oil VS Flax Oil.

4/13/2013

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The Quick Facts:

  • Both are polyunsaturated fatty acids
  • They are ‘essential fatty acids’ which means humans need to consume them through their diet because the body can’t make it.
  • Important Omega-3’s include
    • alpha-linoleic acid (ALA)
    • eicosapentaenoic acid (EPA)
    • docosahexaenoic acid (DHA)
  • Omega-3’s help reduce inflammation in the entire body.
  • EPA and DHA are extremely beneficial in preventing cardiovascular disease in humans (reduces triglycerides, heart rate, blood pressure and atherosclerosis).
  • ALA can be converted to EPA and DHA within the body, but not very efficiently (5% or so). ALA itself doesn’t have the same cardiovascular effects unless it is converted to EPA or DHA.
 

Fish oil

  • A great source of EPA and DHA.
  • Fish oil is typically made from salmon, herring, mackerel, anchovies and sardines (richest sources) – consuming the whole fish works well too!
  • The fish don’t make the omega-3 themselves, they get it from their diet of algae (we can’t make it ourselves either!)
  • Very beneficial in improving your cardiovascular profile and preventing cardiovascular disease among so many other things!
Flaxseed oil

  • A vegetarian source of ALA
  • Contains one of the highest levels of ALA among vegetable oils (roughly 50-60%) - compared to hemp oil, olive oil, soybean oil, etc. [Chia seed oil contains slightly more ALA than flax oil].
  • ALA can be converted to EPA and DHA in the body, but not very efficiently. Supplementation will elevate your total omega-3’s in the body, but it will take significantly more flax oil than fish oil to get adequate EPA and DHA levels.
Bottom Line:

If you are looking to include healthy omega-3 fats in your diet, high quality fish or flax oil are great. If you are looking to decrease your cardiovascular risk, stick to fish oil for maximum benefit.

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    Dr. Josée Boyer, ND

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