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(Medical-NewsWire.com, August 17, 2015 ) Beaverton, Oregon -- The routine of waking up when it is light and sleeping when it is dark is already programmed into the body and it a key to human survival. It has only been recently that scientists have started to understand how this alternating pattern of waking and sleeping relates to darkness and daylight. Researchers now understand that there is a complex chemical pathway involved and when this becomes disrupted it can lead to an array of sleeping disorders. Now many scientists believe that melatonin replacement therapy may offer a natural means to support healthy sleep patterns, without the need for pharmaceutical sleeping drugs.
One of the key factors that regulate sleep is exposure to darkness or light. When the body is exposed to light it stimulates the retina in the eyes, sending signals along a nerve pathway to the hypothalamus in the brain. Here the suprachiasmatic nucleus (SCN) commences a chemical signal to the brain to help control body temperature, hormones, and other functions that either make the body feel awake or sleepy.
Essentially, the SCN works like a clock that regulates a pattern of activities that impact the entire body. For example, as soon as the body is exposed to light the SCN starts to raise body temperature, and releases hormones such as cortisol. Other hormones, such as melatonin are suppressed during this time because they stimulate sleep.
When people have trouble sleeping it's often due to problems releasing melatonin. This natural hormone is made in the pineal gland within the brain. During the day, this gland is not active, but at night it is stimulated by the SCN. Melatonin levels stay elevated during the night to help maintain sleep. If the body is not receiving enough or any melatonin, falling asleep and staying asleep will be very difficult. This is why many people who have sleep disorders turn to supplements containing melatonin.
Instead of taking prescribed sleeping drugs, many people prefer natural supplements. Not only do they help the body to restore the natural sleep/wake cycle, they don't have the same adverse side effects of other medications. A high quality supplement will also contain additional supportive ingredients such vitamin B6 and magnesium, which help to stimulate the pineal gland into producing melatonin. These supplements, combined with relaxation, and darkness before bed time can significantly improve the potential for a better night's sleep.
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Source: EmailWire.Com 
Source: EmailWire.com
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