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Red Light Therapy Works for Weight Loss:Here’s How and Why

by Wei Xuan Huang 01 Dec 2022


Whether your goal is improved health, fat loss, a more attractive body – or all three – red light therapy could be the answer you’re seeking.

Red light therapy is best known for its effectiveness with pain relief, as well as treating chronic skin conditions, scars, skin damage from aging, and accelerating muscle recovery after injuries. Clinical research has also shown that red light therapy can lead to weight loss. In fact, it is becoming increasingly popular as a body contouring treatment.  

How Does Red Light Therapy Work for Weight Loss?

Also known as photobiomodulation or low-level light therapy (LLLT), the term “red light therapy” refers to both red and near-infrared (NIR) wavelengths. Research has overwhelmingly shown that the most beneficial wavelengths fall between 650 nanometers (nm) to 850nm, a range that’s known as the "therapeutic window." Within this window, red light ranges from 620–700nm and NIR light ranges from 810–850nm.

Red light therapy uses light-emitting diode (LED) bulbs to bathe the body in light waves in both the red and NIR spectrum. The most effective red light devices are powerful panels that are fitted with LED bulbs precisely calibrated to specific red and NIR wavelengths.

Once light photons from these LED bulbs interact with the body’s cells, they spark a chain of positive biological effects.

Benefits of Red Light Therapy for Weight Loss

  • Increased Cellular Metabolism
  • Fat Cell Reduction
  • Appetite Suppression
  • Increased Muscle Mass
  • Thyroid Regulation
  • Reduced Insulin Resistance
  • Improved Sleep
  • Reduced Inflammation
  • Improved Mood

By now you are familiar with some of the ways in which red light therapy can promote fat loss, and we have a number of red light devices for you to choose from. Such as red light therapy belt, red light therapy panel and red light therapy mask and so on.

Is Targeted Weight Loss Possible with Red Light Therapy?

Targeted weight loss, also known as body sculpting or body contouring, is on the wish list of almost everyone who wants to lose weight. It is the process of removing fat from certain areas of the body while keeping fat stores in desirable areas. For example, many women want to keep the fat around their breasts but remove belly fat or “saddlebags,” meaning fat stored on the outside of the thighs near the buttocks.

This desire for control over body shape has resulted in the popularity of body contouring, which is a cosmetic approach that focuses on areas of the body where fat tends to settle: the waist, hips, thighs, and upper arms.

Can Infrared and Near-Infrared Light Help You Lose Weight?

The fat-loss benefits of red light (620-660nm) are profound, but they are limited to fat stored directly under the skin. Red light can only penetrate the dermal layer where it activates cellular metabolism at and just below the surface of the skin. This is where most excess fat is stored, so it is possible to have great results with a red-light-only approach.

Near-infrared and infrared (IR) light penetrate deeper into the body than red light. To promote weight loss and improve body composition (the ratio of muscle to fat), it’s necessary to stimulate the metabolism at a deeper level.

Technically, near-infrared light is part of the infrared spectrum. However, between 810 and 850nm, these wavelengths behave more like red wavelengths than far-infrared, which the body perceives as heat.

IR light is effective at treating deep-body conditions, but must be used with caution to prevent thermal damage. This makes NIR light (which does not generate heat in the body) safe and effective.


Using a quality LED red light therapy device that delivers powerful light energy output, can help you lose weight and achieve your goals.With red light, you can target stubborn belly fat, minimize the appearance of cellulite on your buttocks and thighs,  This amazing therapeutic technique stimulates your body to burn more calories more effectively and supports a healthy hormonal balance that affects your appetite.

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