New Study Reveals Harmful Effects of Dim Light Exposure During Sleep

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By Dr. Mercola

By Dr. Mercola

Inside the suprachiasmatic nucleus (SCN) of your brain, which is part of your hypothalamus, resides your master biological clock. Based on signals of light and darkness, your SCN tells your pineal gland when it’s time to secrete melatonin, and when to turn it off.

Your melatonin level inversely rises and falls with light and darkness, and both your physical and mental health is intricately tied to this rhythm of light and dark.

When it’s dark, your melatonin levels increase, which is why you may feel tired when the sun starts to set. Conversely, when you’re exposed to bright artificial …read more

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