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LED streetlights: Should you wear sunglasses at night?

8/25/2016

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​Have you noticed how shockingly bright streetlights are these days? Although they’re great for night time visibility, the newer LED streetlights tamper with the body’s internal clock, skewing metabolic function and raising disease risk.

The effect of blue-rich white light at night on human health is so significant that the American Medical Association (AMA) issued a policy statement about street lighting.

It warns LED street lights are five times more disruptive to the human sleep cycle than traditional street lighting and that recent large surveys link brighter residential lighting with reduced sleep, poor functioning, and more obesity. The lighting also increases the risk of cancer, diabetes, and heart disease.

These bright blue-white lights also strain the eyes and can cause problems walking or driving safely at night. Enough blue light can even damage the retina.

​
How night time lighting can be safer for health
LED lights were introduced because they consume less energy. The AMA suggests ways to make the lighting friendlier to human biology (and that of area wildlife):
  • Lowering the color temperature of the lights away from the blue end of the spectrum (which signals the brain it is daytime) and towards the orange end of the spectrum. Current lights have a color temperature of 4000K to 5000K. Compare this with the use of fire and candles human have used for most of history, at 1800K. The AMA recommends lights be no bluer than 3000K.
  • Better shielding the light to reduce eye-straining glare.
  • Using adaptive controls to dim or extinguish the lights.


Residents complaining about bright lights
You don’t have to understand the science to feel the effects of these lights. Residents in areas where they are installed around the country are complaining, saying the lights feel like a car lot or strip mall parking lot. The LED street lamps also light up the insides of homes, especially in hilly areas such as Seattle. Davis, California residents found them so objectionable the city agreed to replace all existing LED streetlights with more biologically friendly lighting.

Do you need sunglasses at night?
Of course, it’s dangerous to wear dark glasses at night. But that doesn’t mean you don’t have recourse if LED streetlights are a part of your night life.

You can switch the light coming into your eyes to a more biologically friendly hue by wearing orange or rose tinted glasses that aren’t sunglasses. Examples include affordable Uvex safety glasses from Amazon, orange glasses from Low Blue Lights (these glasses are more expensive because they are scratch resistant), or rose tinted migraine glasses.

Also, cities are taking note of complaints, so be sure to add your voice.

Avoid night time blue lights indoors too
LED streetlights aren’t the only culprits when it comes to confusing your sleep-wake cycle. LED televisions, smart phones, tablets, computers, and LED bulbs also bombard you with too much blue light at night, hindering the output of sleep hormones.

Purchasing orange bulbs for lamps, orange filters to put over your screens, or wearing orange glasses a couple of hours before bed are ways to encourage the production of sleep hormones and maintain the delicate but important sleep-wake cycle. 

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August 12th, 2016

8/12/2016

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Scientists confirm gluten sensitivity is a real thing

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Research has confirmed what many people with Hashimoto’s hypothyroidism have long known: Gluten sensitivity is a real thing.

A Columbia University Medical Center study found gluten sensitivity is not an imagined condition, as many seem to think these days, and that celiac disease or a wheat allergy are not required to react to gluten.

Although people with gluten sensitivity may not demonstrate classic symptoms or lab markers of celiac disease, gluten nevertheless causes an acute immune response in gluten sensitive people.

Symptoms of gluten sensitivity vary widely and often include fatigue, brain fog, memory problems, mood imbalances, joint pain, skin eruptions, respiratory issues, and worsening of existing health conditions.

This issue is especially important for people with Hashimoto’s, as the autoimmune thyroid disease has been linked with gluten in several studies.

Gluten sensitivity different than celiac disease
​In celiac disease, the immune response to gluten happens primarily in the small intestine.

With gluten sensitivity, however, the immune response is systemic, meaning the inflammatory cells travel in the bloodstream throughout the body. This explains why symptoms vary so widely.

Researchers found that six months on a gluten-free diet normalized the immune response and significantly improved patient symptoms.

Many people with Hashimoto’s hypothyroidism experience dramatic improvement on a gluten-free diet because it lowers overall inflammation.

Gluten sensitivity awareness crucial for patients
Studies like this are important to help educate doctors that gluten sensitivity can cause chronic health problems.

Many doctors still believe that only celiac disease is to blame for a reaction to gluten. Because gluten sensitivity is largely dismissed and conventional testing for it is so inadequate, many patients unnecessarily suffer from undiagnosed gluten sensitivity.

For patients with Hashimoto’s hypothyroidism, this can mean needing to continually increase your thyroid medication dosage.

Gluten linked to autoimmunity and brain disorders
What’s worse, gluten is linked to many autoimmune diseases. An autoimmune disease is a condition in which the immune system attacks and destroys tissue in the body. One of the most common is Hashimoto’s hypothyroidism, but others include multiple sclerosis, and rheumatoid arthritis.

However, the tissue most commonly attacked in response to gluten sensitivity is neurological tissue.
In other words, your undiagnosed gluten sensitivity could be destroying your brain  This is why gluten causes brain-based disorders in many people.

Unmanaged Hashimoto’s hypothyroidism can also cause accelerated brain decline, so a gluten-free diet should always be part of autoimmune thyroid management.

Gluten sensitivity more common than celiac
Celiac disease was long thought to affect about 1 percent of the population, but newer research shows rates have gone up 700 percent in the last 50 years.

Also, numbers are likely even higher because testing for celiac disease is extremely stringent and outdated. (Diagnostic criteria were developed in Europe, where a celiac diagnosis qualifies one for disability payments.)

Estimates for the rate of gluten sensitivity range from 6 percent of the population to considerably higher—a randomized population sample of 500 people conducted by immunologist Aristo Vojdani, PhD found one in three people had gluten sensitivity.

Proper testing and strict gluten-free diet are vital
Most testing for gluten sensitivity is inaccurate as people can react to at least 12 different compounds in gluten. Standard tests only screen for one, alpha gliadin.

Also, many people have cross reactions to gluten, meaning they respond to other foods they eat as if it were gluten.

Dairy is one of the most common of these. It’s important to test for cross-reactive foods and remove them from the diet along with gluten. It is common for people with Hashimoto’s to do best removing both gluten and dairy from the diet.

It’s also vital to be strict with food sensitivities as the occasional cheat can keep inflammation high and chances at symptom recovery low.

Ask my office for advice on the latest in testing for gluten sensitivity and managing Hashimoto’s hypothyroidism.


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    Author
    Dr. Dhai Barr has spent her life touring France, Canada, and the United States learning her craft from the masters of medical aesthetics. She believes that health and vitality are the foundation of beauty.

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