Red light therapy is a technique that employs a wavelength of light for medicinal and therapeutic applications. The light-emitting diode (LED) source generates infrared radiation and heat. Red light therapy (RLT) uses low-wavelength red light to treat skin problems. Red light can reach the epidermis, the upper layer of the skin, and the dermis, the deeper layers of skin, whereas near-infrared light can penetrate deep layers of skin, bone, and deeper organs. Collagen, elastin, and other essential components are found in the dermis layer of the skin, and red light therapy can directly act on the mitochondria of cells to regulate metabolism. That is why many specialists think it can aid in treating skin ailments, inflammation, and delay wrinkling, stretch marks, and many other conditions.

This blog will discuss the clinical studies of how red light therapy affects testosterone levels. We will also discuss the controversy around using red light therapy on testosterone levels and the truth about this topic. Finally, we will advise you on using red light therapy for testosterone health - based on the evidence we have gathered.

What is low testosterone?

Low testosterone (male hypogonadism) is a condition in which male gonads don't produce enough testosterone, and more specifically, it is the Leydig cells that make testosterone. Testosterone is the primary androgen. It stimulates the development of male characteristics and is essential for sperm production. Testosterone helps maintain and develop sex organs, genitalia, muscle mass, adequate levels of red blood cells, bone density, sense of well-being and sexual and reproductive function. The American Urology Association (AUA) considers low blood testosterone to be less than 300 ng/dL per adult. Low testosterone causes different symptoms at different ages.

Symptoms of low testosterone in adults include:
  • Reduced sex drive
  • Erectile dysfunction
  • Loss of armpit and pubic hair
  • Shrinking testicles
  • Hot flashes
  • Low or no sperm count, which causes male infertility
  • Depressed mood
  • Difficulties with concentration and memory
  • increased body fat
  • Decrease in muscle strength and mass
  • Decrease in endurance
  • Enlarged male breast tissue (gynecomastia)
Symptoms of low testosterone in children include:
  • Slowed growth in height, but their arms and legs may continue to grow out of proportion with the rest of their body.
  • Reduced development of pubic hair
  • Reduced growth of their penis and testicles
  • Less voice deepening
  • Lower-than-normal strength and endurance

What causes low testosterone?

The hypothalamus and pituitary gland typically control the amount of testosterone that testicles produce and release. The hypothalamus releases gonadotropin-releasing hormone (GnRH), which triggers the pituitary gland to release luteinizing hormone (LH). LH then travels to the gonads and stimulates the production and release of testosterone. In addition, the pituitary also releases follicle-stimulating hormone (FSH) to cause sperm production. Any problem with the testicles, hypothalamus or pituitary gland can cause low testosterone conditions.

How red light therapy benefits testosterone health

Numerous studies have proven that red light therapy is a very effective physical therapy method used in many areas of medicine, including andrology and urology. It is recommended as an integral part of infertility treatment. Male infertility is a multifactorial syndrome that includes many disorders, a symptom of various pathological conditions.

Red light therapy increases ATP generation.

One of the main features of red light therapy that has been well studied is its ability to stimulate ATP energy production. The fundamental mechanism of red light therapy is thought to be through the absorption of red and NIR light by mitochondrial chromophores, particularly cytochrome c oxidase (CCO), which is contained in the respiratory chain located within the mitochondria, and also by photoreceptors in the plasma membrane of cells. Consequently, a cascade of signalling pathways leads to the biostimulation of various processes, including ATP production.

In turn, by upregulating the cellular redox state, red light therapy can activate numerous intracellular signalling pathways and alter the affinity of transcription factors concerned with cell proliferation, survival, tissue repair and regeneration. This is the study which demonstrated the stimulation ability in the mitochondrial level of red and near-infrared light therapy. The picture below shows the ATP levels and the increase of mitochondrial membrane potential using light-emitting diode red and near-infrared treatment compared to a control group.

Red light therapy improves the spermatozoa motility

Several studies have examined the efficacy of low dosage red light therapy for cellular viability and increasing sperm motility. They indicated that the proposed chemical mechanism of intracellular photonic absorption by cytochrome-c oxidase (CCO) will increase ATP production and thus sperm motility. The picture below showed there was a significant improvement in swim velocity of spermatozoa and a remarkable difference in oxidative DNA. This study supports the claim that exposure to red light irradiation can improve sperm motility while producing little or no DNA damage to sperm cells.


Red light therapy induces calcium concentration.

Many studies indicate a direct relationship between an increase in intracellular Ca2+ concentration and the stimulation of the fertilizing capacity of spermatozoa in both animals and humans. In one of these studies, it explained the effect as a result of the paradoxical function of calcium ions on sperm motility. In the epididymis, calcium ions stimulate immature sperm, whereas, in ejaculated semen, calcium ions inhibit sperm motility. Maturation processes change the response of sperm to calcium ions. Calcium binding substances and calcium transport inhibitors, which are secreted by male accessory sexual organs and mixed with sperm during ejaculation, are removed during the process known as capacitation, so that calcium ions trigger the acrosome reaction and facilitate sperm capability. In many studies, it is proven that red and near infrared light therapy can enhance the intracellular calcium levels. There is one of these references. Another study also concluded that near-infrared light treatment at 780 nm inhibits Ca2+ uptake by sperm mitochondria and enhances Ca2+ binding to sperm plasma membranes.

The pros and cons of red light therapy for testosterone health

Testosterone assists in the production of red blood cells through the bone marrow. Numerous heart issues have been linked to low testosterone levels. According to a recent study involving 83,000 men, males whose testosterone levels have returned to normal are 24% and 36% less likely to get a heart attack, respectively. Bone mass density is significantly influenced by testosterone. Men's testosterone levels decline as they age, and their bone density declines. Increased muscle mass is a testosterone effect.

However, maintaining healthy levels of testosterone doesn't mean to have a high level testosterone. There are some side effects if the level of testosterone is too high.

Researchers found that males with a hereditary propensity for high testosterone levels have a two-fold increased risk of thrombosis and an eight-fold increased risk of heart disease (blood clots that can obstruct blood vessels or arteries related to the nervous system or respiratory system).

Other signs of high levels of testosterone in men include:
  • Testosterone poisoning is a term used to describe actions that are considered highly aggressive, reckless or risk-taking behaviour.
  • Headaches
  • Excessive body hair
  • Issues with heart or liver
  • Hypertension
  • Strong sexual arousal
  • Excessive desire to eat
  • Insomnia
  • Infertility
  • Low sperm count
  • Mood fluctuations
  • Prostate enlargement, which can cause urinary incontinence
In conclusion, there are indeed many benefits to have a testosterone boosting by red light therapy, whereas there are also some side effects associated with excessively high-level of testosterone. In addition, overdosing or having high heat from light irradiation can on the other hand, skill sperm. The goal is to apply light photon rather than heat to achieve desired effects. So it is very important to choose a medical-grade red light therapy device for your concerns, which can also give professional instructions of using it on this condition.

Final thoughts: Why Bestqool red light therapy devices?

Using red light therapy to increase testosterone is a simple approach, while the best part of such therapy is that it only takes a few weeks of treatment to start seeing results. What's more, you may also see improvements in other areas of your life when you focus on this kind of therapy. It is worth noting that comparing to the conventional testosterone replacement treatment, which has well-documented adverse effects to overall health, red light therapy has minimal transitory side effects and there is no visible side effects in long-term use, according to this important study.

Even so, there are officially no FDA-cleared light devices for this application in the market, though given that minimal side effects of light therapy, any such kinds of light bulbs may only cause some discomforts. To choose a device that can lead to desired results, it is important to verify if the claims of medical-degree performance have been reviewed and supervised by the acknowledged authoritative.

All Bestqool products are produced from the FDA-registered factories and able to meet the medical-grade performance. All Bestqool products apply the advanced LED technology to allow the delivery of optimal wavelengths and irradiance levels for targeted conditions. With our red light therapy wand or small-size red light therapy panel, you can experience the professional red light therapy at home conveniently as in clinic. Bestqool portable-size red light therapy panel is also equipped with internal timer system to facilitate your success of testosterone treatment by allowing the sensitive control of dose and timing.

Our products are all FDA-cleared and ETL-certified, without EMFs emitting from 3 inches away, and trustworthy. All Bestqool devices have a three-year warranty, which is never exceeded by any counterparts in this field. That gives the best answer for your trust in us. And our design quality and safety standards will give you answers of best red light therapy.