Can Red Light Therapy Cause Cancer?

Red light therapy has exploded in popularity in recent years as a non-invasive, beneficial treatment for a wide range of health issues. This treatment promises an abundance of advantages, including skin rejuvenation and pain relief. There have been concerns raised about the potential for cancer, as is the case with any new medical treatment. Here, we’ll delve into the world of red light therapy to learn more about its mechanisms, benefits, and whether red light therapy causes cancer.

Can Red Light Therapy Be Harmful?

Although red light therapy is generally safe, some risks are involved, especially with improper use. Light sensitivity and certain medical conditions can cause eye damage, skin irritation, and adverse reactions. Complications can also happen if you overuse or use low-quality devices since light intensity or wavelengths of low-quality devices could be harmful.

Individuals with preexisting health concerns or taking medication that increases light sensitivity should take precautions, including wearing protective eyewear and consulting a healthcare professional. It’s especially important for cancer patients to use devices that adhere to safety standards to avoid health risks.

You can read our article if you are also interested in knowing the benefits of the therapy of red light in Las Vegas and its procedure.

Can Red Light Therapy Cause Cancer?

No reliable research has linked red light therapy to an increased risk of cancer. Red light therapy has been shown to have therapeutic benefits like accelerated wound healing, reduced pain, and enhanced skin quality. Here are some points to consider regarding red light therapy and its relation to cancer:

Different from UV Light

Light with wavelengths between 630 nm and 700 nm (red) and 800 nm and 880 nm (near infrared) are used in red light therapy. In contrast to ultraviolet (UV) light, which has been associated with an enhanced risk of skin cancer, this poses no such threat. Red light therapy does not have the same effect as ultraviolet (UV) light, which can cause cancer by damaging skin cells’ DNA.

Low-Level Laser

Red light therapy uses much lower intensity than other forms of radiation therapy used to treat cancer. Red light therapy uses low-intensity laser or LED light to stimulate cellular activity without endangering DNA through thermal stress.

Therapeutic Use in Cancer Patients

Red light therapy may benefit cancer patients, particularly in the treatment of oral mucositis, a painful side effect of chemotherapy and radiation. By using red and near-infrared wavelengths, this therapy promotes cell regeneration, reduces inflammation, and alleviates pain, which helps heal mucous membranes in the mouth.

Cellular Effects

Red light therapy works by increasing cellular energy production (ATP) primarily through light absorption by mitochondria. This procedure is not linked to carcinogenesis but can have some positive effects, like less inflammation and faster cell regeneration.

No Direct Evidence of Cancer Risk

There was not any concrete proof linking red light therapy to an increased risk of developing cancer. The potential benefits of red light therapy have been the primary focus of research in this field, rather than its risks, such as carcinogenesis.

Regulatory Status

Cosmetic and therapeutic red light therapy devices are typically subject to regulatory oversight to ensure safety. That includes making sure they don’t give off any dangerous radiation.

How Often Can You Safely Use Red Light Therapy?

The typical safe range for red light therapy is 3 to 5 weekly sessions of 10 to 20 minutes each. This can vary based on the specific condition being treated and individual response. It’s best to begin with the instructions provided by the manufacturer or the advice of a medical professional. To get the best results, consistent, regular use over time is usually required, but overuse can be irritating to the skin and ought to be avoided.

Is it OK to Do Red Light Therapy Everyday?

Red light therapy can be used daily without risk, especially during the early stages of treatment or for certain conditions. Most sessions last between 10 and 20 minutes. However, because people react differently, it’s important to keep an eye out for any negative side effects and make adjustments as needed. The instructions that come with your gadget should always be followed.

Who Shouldn’t Use Red Light Therapy?

There are certain people who should be cautious about red light therapy, especially those with specific health conditions:

●      Cancer Patients.

Despite the lack of substantial evidence, anyone with active cancer, especially skin cancer, should speak with their doctor before using red light therapy. It’s important to get professional medical advice in such cases because of the theoretical risk of promoting tumor growth.

●      Individuals with Photosensitivity.

Skin reactions can be more likely in people who have light-sensitive conditions or are taking medications that increase light sensitivity.

●      Pregnant Women.

It’s generally advised that pregnant women avoid red light therapy since there’s limited research on its effects.

●      Children.

Not enough studies have been done on red light therapy in kids.

●      People with Eye Conditions.

People with eye conditions should protect their eyes or avoid therapies that expose them to intense light.

●      Those with Certain Skin Disorders.

Before using red light therapy, people with skin disorders that might be aggravated by light should consult a dermatologist.

Can Red Light Therapy Cause Melanoma?

Red light therapy hasn’t been found to cause melanoma or any other type of skin cancer. A red light therapy treatment uses low wavelengths of red or near-infrared light, which is different from ultraviolet (UV) light, which causes skin cancer.

Sun’s UV radiation, or the radiation of tanning beds, is a major risk factor for melanoma and other skin cancers. Red light therapy uses wavelengths that are less harmful to DNA than UV light. Red light therapy is used for a variety of therapeutic purposes, including skin rejuvenation and healing, and is generally accepted as safe.


There is currently not enough evidence to conclude that red light therapy can cause cancer despite its increasing popularity. Skin rejuvenation, pain relief, faster wound healing, and enhanced mental health are just some of the possible outcomes of this treatment. If you’re interested in trying red light therapy, it’s important to get a doctor’s OK and only use medical-grade equipment.

In Las Vegas, Dynamic Spine & Sport Rehabilitation specializes in various physical therapy services, primarily emphasizing red light therapy. To improve the well-being of patients and their loved ones, our rehabilitation center is committed to providing exceptional care in a comforting setting.

We take a holistic approach to healing that incorporates wellness concierge services, expert concussion management, and specialized care for those recovering from injuries sustained in automobile accidents or on the job.