White Light, Red Light

J

j.

Guest
Effects of different wavelengths in seasonal affective disorder.
Brainard GC, Sherry D, Skwerer RG, Waxler M, Kelly K, Rosenthal NE.
Source
Clinical Psychobiology Branch, National Institute of Mental Health, Bethesda, MD 20892.

Abstract
The aim of this study was to compare the relative therapeutic efficacies of three different light sources for treating winter depression. A balanced incomplete block crossover design was employed, whereby all patients (n = 18) were randomly assigned to two out of the three treatment conditions: white, red and blue light. The degree of depression was assessed by the 21-item Hamilton Depression Rating Scale. The data suggest that at a photon density of 2.3 X 10(15) photons/s/cm2, white light has greater therapeutic benefit than red or blue light. It is clear that a larger sample population should be tested to confirm this result. This preliminary finding indicates that light sources currently in use for phototherapy could not be improved by narrowing the wavelengths provided and shifting them towards either end of the visible spectrum.

Link
 

narouz

Member
Joined
Jul 22, 2012
Messages
4,429
j. said:
Effects of different wavelengths in seasonal affective disorder.
Brainard GC, Sherry D, Skwerer RG, Waxler M, Kelly K, Rosenthal NE.
Source
Clinical Psychobiology Branch, National Institute of Mental Health, Bethesda, MD 20892.

Abstract
The aim of this study was to compare the relative therapeutic efficacies of three different light sources for treating winter depression. A balanced incomplete block crossover design was employed, whereby all patients (n = 18) were randomly assigned to two out of the three treatment conditions: white, red and blue light. The degree of depression was assessed by the 21-item Hamilton Depression Rating Scale. The data suggest that at a photon density of 2.3 X 10(15) photons/s/cm2, white light has greater therapeutic benefit than red or blue light. It is clear that a larger sample population should be tested to confirm this result. This preliminary finding indicates that light sources currently in use for phototherapy could not be improved by narrowing the wavelengths provided and shifting them towards either end of the visible spectrum.

Link

This is another of those ambiguous areas in PeatLand.

I think we have it pretty well figured out what Peat prefers in "Red Light Therapy."
But I've never been able to clarify for sure
if Peat also believes that "SAD" light therapy is beneficial.

I believe it was back in the '90's in one of his newsletters
that Peat seemed, vaguely, to refer to an "SAD"- style light therapy
in that he said something like
"staring into several hundred watts of bright incandescents
for a few seconds might be more beneficial than staring at
a low watt bulb for hours."

By "SAD style" light therapy
I mean a therapy centered around looking into bright lights for a relatively brief amount of time.
You will see very bright light panels for sale for this purpose
and the light produced by them is not only or maybe not even mostly of the red spectrum (600--850nm)
that Peat designates the therapeutic red spectrum.
And with Peat-style Red Light therapy
it is not clear that any "staring into" the lights is necessary.

We are talking about one kind of light therapy that targets the eyes/retina,
and another that targets the skin
(and Peat reputedly told someone privately,
when asked what are the best areas of the body
to focus the red light therapy upon,
that those areas would be the abdomen and the head.)
He didn't, as I recall, say "face." He said head. I wish I could know his explanation.

So...j.,
you seem to be emphasizing the SAD-style, eye/retina kind of light therapy.
And I don't know what Peat thinks about that--
what spectrums he recommends
or if he even thinks the therapy is helpful.
The SAD people seem to use bright "white" light which includes some blue and green wavelengths
as I recall.

I've been curious about this too.
 
J

j.

Guest
Thread starter
I don't really emphasize SAD style therapy on purpose, I was just googling trying to learn more about the light stuff.
 
J

j.

Guest
Thread starter
White light I think is supposed to be the combination of the entire visible spectrum, but I wonder if the benefits only come from the red and orange part of the spectrum.
 

Amazoniac

Member
Joined
Sep 10, 2014
Messages
7,689
Location
Not Uganda
I believe it was back in the '90's in one of his newsletters
that Peat seemed, vaguely, to refer to an "SAD"- style light therapy
in that he said something like
"staring into several hundred watts of bright incandescents
for a few seconds might be more beneficial than staring at
a low watt bulb for hours."
I suspect that even if someone was using a burqa, the therapeutic effects of perceiving the bright light would be similar. So bright incandescent lamps in front of the person (staring directly seems stressful) should compensate for the lack of bright light:
Light is Right – Functional Performance Systems (FPS)
The absence of bright light would create a progesterone deficiency, and would leave estrogen and prolactin unopposed.
Maybe it's something dictated by the amount of vitamin A that's being consumed for vision as a signal for the rest of the body about what's going on in the environment, as the fertile talked about here.

 
Last edited:

biggirlkisss

Member
Joined
Mar 1, 2013
Messages
904
red is the most effective it goes the deepest no point focusing on other wavelengths 670nm is the best next to 660nm. If you want to argue that a wide range of red 620-670nm is best then using one single wavelength I would need to use carbon moxide breathe reader with 0.01 and another one calibrated to give you that
 
Similar threads
Thread starter Title Forum Replies Date
Mr. God of Cars White LED Light And Its Possible Red Wavelength Spectrum Emission Light 29
biggirlkisss white led light instead of red Red Light, Infrared, LLLT 5
MaxVerstappen Questions Regarding White Light Therapy Red Light, Infrared, LLLT 7
R Can White LED's Replace Incandescent Light? Supplements 9
J White Warm LED Light Bulbs Red Light, Infrared, LLLT 26
G Ray himself consumes 1600 calories of sugar per day, with 0 white sugar Beverages, Fruits, Sugars 27
Ben Stone White button mushrooms as an optimal dinner meal with bone broth? Diet 13
Incen alternative to white button mushroom Vegetables, Grains, Legumes, Fiber 2
Anastasia Dosov White button mushroom causes incredible pain and gases :( Diet, Recipes 9
S White Spot On Tongue Ask For Help or Advice 0
Hgreen56 Are White Potatoes High In Oxalate? Diet 8
K White Or Chocolate Milk? Diet 0
_lppaiva Anti-Peat Chemicals In White Sugar Debate - Anti-Peat 4
Twohandsondeck White Rice Gave Me Tooth Sensitivity Miscellaneous Health Discussions 8
Twohandsondeck Meat + Citrus Is Good For Digestion But Meat + White Rice Is Good For Getting Jacked?(Vertical Diet) Digestion, Gut Flora 15
J Bumpy Skin And White Fish/Iodine Skin 0
T White And Gray Matter Ask For Help or Advice 0
Inaut Thoughts On Using White Button Mushroom Powder? Carrot Salad, Bamboo Shoots, Mushrooms 3
T Self-experiment: Feeling Great After 2 Weeks Of No Coffee Or White Sugar Coffee 75
L Got An "Extreme Emergency: STAY HOME" Text Yesterday; Today I See Jets Spraying A Thick White Thing Breaking News 69
Lenny Quick Question: Should I Eat White Button Muchrooms While Taking Minocycline? Ask For Help or Advice 6
methylenewhite Egg White Lysozyme Binds LPS. COMPLETELY Abrogates TNF And Mortality Caused By LPS Dairy, Eggs 29
berk Lot Of Arsenic In Apple Juice (low In White And Brown Rice) Scientific Studies 3
gately Any Ideas Why I React To White Rice And Sweet Potatoes But Not White Bread And Regular Potatoes? Diet 25
Max. Drink White Grape.juice Can Increase Iron? Diet, Recipes 3
L How Do You Keep Your Teeth Healthy And White On This Diet? Oral Health 26
GreekDemiGod Instant Brain Energy Boost From White Sugar Metabolism 4
maillol Soya Flour In Most White Breads Discussing Dietary Models 2
methylenewhite Extreme Endotoxin Reaction. White Mushrooms. Portobello Carrot Salad, Bamboo Shoots, Mushrooms 39
paulwalkerrip Looking For Lecithin-Free White Chocolate As Well As Stearic Acid Advice Ask For Help or Advice 5
T White Dead Nettle Tea Drained My Varicocele To An Extent Health 9
paulwalkerrip White Rice - Do You Eat It? Starches, Fiber, Legumes 40
_lppaiva Too Much White Sugar? Diet 26
murdoc TEENAGER WENT BLIND AFTER ONLY EATING FRIES, CHIPS, WHITE BREAD, SAUSAGES AND HAM Articles & Scientific Studies 39
M Refined White Sugar Vs Cane/Brown Sugar (& Coke) Digestion, Gut Flora 4
Deadpool White Tongue, Blocked Ears Constantly (Histamines?) Ask For Help or Advice 6
Cirion Bored Of White Rice Starches, Fiber, Legumes 16
lyfe Ending My Long Time Sugar Phobia - Can I Use Typical White Sugar? Sugar, Honey 9
Repas du soir Why Is It So Easy For Teeth To Become Yellow, But So Hard For Them To Become White? Oral Health 7
jzeno Quick Question: Why Does Ray Peat Suggest White Rice Over Brown? Starches, Fiber, Legumes 12
jzeno Dr. McDougall: Cure Type 2 Diabetes With Sugar & White Rice Miscellaneous Health Discussions 49
A Challenging White Bread Discussing Dietary Models 46
A White Bread Has 260mg Calcium Per 100g? Diet, Recipes 4
M White Moons On Nails - Possible Iron Overload? Health 13
B White Tongue, Candida, Dandruff, Hair Loss ? Ask For Help or Advice 6
Beastmode White Button Mushrooms Experiment Digestion 20
Hugh Johnson The Western White Male Personality Is Maladaptive Ray Peat Quotes 97
Energizer NPR Is Promoting The "White Helmets" Political Talk, Alternative World Theories 3
L Do White Button Mushrooms Have High FODMAP Content? Diet, Recipes 23
debored13 White Coat Hypertension, Hypertension, POTS Heart, Heart Rate, Blood Pressure 19

Similar threads

Top