Blue Light, Depression & Anxiety

A Harvard study identified preliminary results that link blue light to diabetes and possibly obesity. The researchers put ten people on a schedule that gradually shifted the timing of their circadian rhythms similar to what occurs when you look at a screen or mobile phone. The test subject's blood sugar levels increased, placing them into a pre-diabetic state. Their levels of leptin, a hormone that keeps people feeling full after a meal, went down. Here's a link to the Harvard Study: Link Here is why. Nighttime exposure to blue light delays the nocturnal melatonin peak (shifting the circadian rhythm) which

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