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Red light therapy and its effects on testosterone, bone health, and Masseter strength
Testosterone:
"We found fairly significant differences between those who received the active light treatment, and the controls. Before treatment, both groups averaged a sexual satisfaction score of around 2 out of 10, but after treatment the group exposed to the bright light was scoring sexual satisfaction scores of around 6.3 -- a more than 3-fold increase on the scale we used. In contrast, the control group only showed an average score of around 2.7 after treatment.".The control group did not see testosterone rises, but the active light therapy group showed a huge increase from about 2.1 ng/ml to 3.6 ng/ml in just 2 weeks. [2]
https://www.sciencedaily.com/releases/2016/09/160918214443.htm
A 2013 study in Biomedical Research found that red light therapy at 670 nanometers (nm) increased the serum testosterone levels of lab rats, with no noted side effects.
https://www.alliedacademies.org/art...elevatingserum-testosterone-level-in-rats.pdf
Another 2013 study on testosterone in rats published in the Nepal Medical College Journal found that the follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which are connected to the production of testosterone and natural sex steroids, were elevated in rats subjected to light for 70 days. [10] The FSH and LH pathway is essentially the same in humans, and they’re referred to as “gonadotropins” because of their ability to stimulate testicular function
https://www.ncbi.nlm.nih.gov/pubmed/24592797
After five days of chest exposure sufficient to cause reddening, circulating testosterone increased by 120%. After eight days without additional UV exposure, testosterone returned to initial levels. When the genital area was exposed, testosterone levels increased by 200%
Theory on how this works: Red and infrared wavelengths penetrate and stimulate leydig cells, which produce testosterone within the testicles. This stimulation increases testosterone production The major flaw of all of this is lack of studies, and participants. To counter this I looked at studies of sunlight and its effects on testosterone as the mechanism is similar and is more widely researched
Average testosterone levels in summer vs winter (I assume difference is due to sun exposure) Sample size=80
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5057046/
(Important disclaimer: most Infrared lights emit heat, The temperature of the testes is maintained at 35 degrees Celsius (95 degrees Fahrenheit). Make sure that you keep it cool) either by increasing distance of light or other methods.
Bone growth:
"In conclusion, LA promotes longitudinal bone growth in adolescent rats, suggesting that laser acupuncture may be a promising intervention for improving the growth potential for children and adolescents."
https://www.ncbi.nlm.nih.gov/pubmed/23986782
A positive effect of low-level laser energy on bone regeneration within a certain relationship between dose and output power was found. LLLT stimulates cellular metabolism, increasing protein synthesis and subsequent bone regeneration. A high dose combined with low power or a low dose combined with high power appears to produce a positive effect.
https://www.ncbi.nlm.nih.gov/pubmed/28742438 (review of 19studies (out of 230 only 19met inclusion criteria)
"No significant difference in new cartilage formation and inflammation was found between the groups (p > 0.05). However, there was significantly more new bone formation in the experimental group (p < 0.05)." (This means that your nose will not grow @Gudru)
https://www.ncbi.nlm.nih.gov/pubmed/27058019
Masseter hypertrophy: (limitation is it was only used on patients will orofacial pain)
In the EG, the study results revealed average increments of 0.77 (0.08) millimeter in masseter thickness (P < 0.05) and 7.39 (0.58) millimeter for mouth opening https://www.ncbi.nlm.nih.gov/pubmed/28536904
"All patients showed improvement in muscle contraction strength of about 2.51-3.01 kgf on the right and left masseter muscle."
(Irradiation area: • 5 mm2–without intraoral extremity • 4 mm2–with intraoral extremity (when it is used, 20% of its potency is lost) • Wavelength: 670 nm (visible as red)
For those confused x axis represents initial bite strength, and y represents after laser. Participants with lower initial biting strength saw larger gains.
https://www.ncbi.nlm.nih.gov/pubmed/16144479
How to use (wavelengths and time) @MadMong for you bro
“The wavelengths of light used for LLLT fall into an “optical window” at red and NIR wavelengths (600–1070 nm) . Effective tissue penetration is maximized in this range, as the principal tissue chromophores (hemoglobin and melanin) have high absorption bands at wavelengths shorter than 600 nm. Wavelengths in the range 600–700 nm are used to treat superficial tissue, and longer wavelengths in the range 780–950 nm, which penetrate further, are used to treat deeper-seated tissues. Wavelengths in the range 700–770 nm have been found to have limited biochemical activity and are therefore not used”
Time:
It is well established that if the light applied is not of sufficient irradiance or the irradiation time is too short then there is no response. If the irradiance is too high or irradiation time is too long then the response may be inhibited.Somewhere in between is the optimal combination of irradiance and time for stimulation.
Most studies practice 15-30minutes ,
formula for irradiance (λ represents wavelength), so lowering wavelength lowers irradiance
Wavelength: (600–1070 nm) avoid 700-770
Time: General rule, 10-30minutes depending on wavelength, distance from light, and area of surface either go to the higher or lower boundaries
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3288797/
Safety:
In addition to noting increased sperm motility, a 2017 study published in Scientific Reports found that these treatments were safe, and did not induce any oxidative DNA damage to the sperm or testes. https://www.ncbi.nlm.nih.gov/pubmed/28425485
A note: these articles are generally less reliable and more speculative due to the limitations of studies. But by trying out and testing these methods we can help advance these theories and help other looksmaxers. This is more for people who have already purchased and are open to try new methods
TL;DR
Testosterone production (2.1 ng/ml to 3.6 ng/ml in just 2 weeks)
Bone growth and repair ( LLLT stimulates cellular metabolism, increasing protein synthesis and subsequent bone regeneration)
Masseter hypertrophy ("All patients showed improvement in muscle contraction strength of about 2.51-3.01 kgf on the right and left masseter muscle.")
Join discord or react with puke emoji if you want to be tagged in the next thread
@Vitruvian @Guest @Soulsmaxx @MadMong @Bluepill @her @You @Gebirgscel @TubOfLard @Arkantos @AspiringChad @dogtown @Dude420 @Krezo @AdamLamberg @Mewisthekey @Saturn @TubOfLard
Testosterone:
"We found fairly significant differences between those who received the active light treatment, and the controls. Before treatment, both groups averaged a sexual satisfaction score of around 2 out of 10, but after treatment the group exposed to the bright light was scoring sexual satisfaction scores of around 6.3 -- a more than 3-fold increase on the scale we used. In contrast, the control group only showed an average score of around 2.7 after treatment.".The control group did not see testosterone rises, but the active light therapy group showed a huge increase from about 2.1 ng/ml to 3.6 ng/ml in just 2 weeks. [2]
https://www.sciencedaily.com/releases/2016/09/160918214443.htm
A 2013 study in Biomedical Research found that red light therapy at 670 nanometers (nm) increased the serum testosterone levels of lab rats, with no noted side effects.
https://www.alliedacademies.org/art...elevatingserum-testosterone-level-in-rats.pdf
Another 2013 study on testosterone in rats published in the Nepal Medical College Journal found that the follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which are connected to the production of testosterone and natural sex steroids, were elevated in rats subjected to light for 70 days. [10] The FSH and LH pathway is essentially the same in humans, and they’re referred to as “gonadotropins” because of their ability to stimulate testicular function
https://www.ncbi.nlm.nih.gov/pubmed/24592797
After five days of chest exposure sufficient to cause reddening, circulating testosterone increased by 120%. After eight days without additional UV exposure, testosterone returned to initial levels. When the genital area was exposed, testosterone levels increased by 200%
Theory on how this works: Red and infrared wavelengths penetrate and stimulate leydig cells, which produce testosterone within the testicles. This stimulation increases testosterone production The major flaw of all of this is lack of studies, and participants. To counter this I looked at studies of sunlight and its effects on testosterone as the mechanism is similar and is more widely researched
Average testosterone levels in summer vs winter (I assume difference is due to sun exposure) Sample size=80
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5057046/
(Important disclaimer: most Infrared lights emit heat, The temperature of the testes is maintained at 35 degrees Celsius (95 degrees Fahrenheit). Make sure that you keep it cool) either by increasing distance of light or other methods.
Bone growth:
"In conclusion, LA promotes longitudinal bone growth in adolescent rats, suggesting that laser acupuncture may be a promising intervention for improving the growth potential for children and adolescents."
https://www.ncbi.nlm.nih.gov/pubmed/23986782
A positive effect of low-level laser energy on bone regeneration within a certain relationship between dose and output power was found. LLLT stimulates cellular metabolism, increasing protein synthesis and subsequent bone regeneration. A high dose combined with low power or a low dose combined with high power appears to produce a positive effect.
https://www.ncbi.nlm.nih.gov/pubmed/28742438 (review of 19studies (out of 230 only 19met inclusion criteria)
"No significant difference in new cartilage formation and inflammation was found between the groups (p > 0.05). However, there was significantly more new bone formation in the experimental group (p < 0.05)." (This means that your nose will not grow @Gudru)
https://www.ncbi.nlm.nih.gov/pubmed/27058019
Masseter hypertrophy: (limitation is it was only used on patients will orofacial pain)
In the EG, the study results revealed average increments of 0.77 (0.08) millimeter in masseter thickness (P < 0.05) and 7.39 (0.58) millimeter for mouth opening https://www.ncbi.nlm.nih.gov/pubmed/28536904
"All patients showed improvement in muscle contraction strength of about 2.51-3.01 kgf on the right and left masseter muscle."
(Irradiation area: • 5 mm2–without intraoral extremity • 4 mm2–with intraoral extremity (when it is used, 20% of its potency is lost) • Wavelength: 670 nm (visible as red)
For those confused x axis represents initial bite strength, and y represents after laser. Participants with lower initial biting strength saw larger gains.
https://www.ncbi.nlm.nih.gov/pubmed/16144479
How to use (wavelengths and time) @MadMong for you bro
“The wavelengths of light used for LLLT fall into an “optical window” at red and NIR wavelengths (600–1070 nm) . Effective tissue penetration is maximized in this range, as the principal tissue chromophores (hemoglobin and melanin) have high absorption bands at wavelengths shorter than 600 nm. Wavelengths in the range 600–700 nm are used to treat superficial tissue, and longer wavelengths in the range 780–950 nm, which penetrate further, are used to treat deeper-seated tissues. Wavelengths in the range 700–770 nm have been found to have limited biochemical activity and are therefore not used”
Time:
It is well established that if the light applied is not of sufficient irradiance or the irradiation time is too short then there is no response. If the irradiance is too high or irradiation time is too long then the response may be inhibited.Somewhere in between is the optimal combination of irradiance and time for stimulation.
Most studies practice 15-30minutes ,
Wavelength: (600–1070 nm) avoid 700-770
Time: General rule, 10-30minutes depending on wavelength, distance from light, and area of surface either go to the higher or lower boundaries
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3288797/
Safety:
In addition to noting increased sperm motility, a 2017 study published in Scientific Reports found that these treatments were safe, and did not induce any oxidative DNA damage to the sperm or testes. https://www.ncbi.nlm.nih.gov/pubmed/28425485
A note: these articles are generally less reliable and more speculative due to the limitations of studies. But by trying out and testing these methods we can help advance these theories and help other looksmaxers. This is more for people who have already purchased and are open to try new methods
TL;DR
Testosterone production (2.1 ng/ml to 3.6 ng/ml in just 2 weeks)
Bone growth and repair ( LLLT stimulates cellular metabolism, increasing protein synthesis and subsequent bone regeneration)
Masseter hypertrophy ("All patients showed improvement in muscle contraction strength of about 2.51-3.01 kgf on the right and left masseter muscle.")
Join discord or react with puke emoji if you want to be tagged in the next thread
@Vitruvian @Guest @Soulsmaxx @MadMong @Bluepill @her @You @Gebirgscel @TubOfLard @Arkantos @AspiringChad @dogtown @Dude420 @Krezo @AdamLamberg @Mewisthekey @Saturn @TubOfLard
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