For many women in midlife, strength training becomes non-negotiable. It preserves muscle, protects bone density, supports metabolic health, and reinforces confidence. Recovery, however, often changes with age. Muscle soreness lingers longer, joints feel stiffer, and sleep becomes less predictable. These shifts have led many women to explore recovery tools such as red light and other LED therapies.
The thing to remember is that these therapies can be useful, but only when understood within the broader context of cellular health. Let’s take a look at what they actually are, and what they aren’t, despite claims.
The Science Behind the Tech
Red light therapy is a popular type of photobiomodulation (PBM) that uses wavelengths typically between 630 and 660 nanometers to affect biological processes (a.k.a. healing) at the cellular level. These wavelengths penetrate skin and underlying tissue and are absorbed primarily by mitochondria, the organelles responsible for the production of adenosine triphosphate (ATP), the primary energy source for your body’s cells.
When mitochondrial enzymes absorb this light, mitochondrial efficiency may improve, ATP production can increase, and oxidative stress signaling may be modulated. In practical terms, red light therapy and other forms of PBM help cells use energy more efficiently, particularly during periods of increased physical demand. What remains less clear is how consistently this cellular mechanism translates into meaningful clinical outcomes.
Potential Benefits
Perimenopause and menopause bring physiological changes that directly affect recovery. Muscle protein synthesis declines, inflammatory signaling increases, and sleep regulation shifts. These factors slow tissue repair and extend recovery time after training.
PBM using wavelengths other than red, such as blue and green light, may help support recovery by improving cellular energy availability and modulating local inflammation, and some research shows this may also be applicable to red light therapies. This makes PBM a potentially beneficial complement to the routines of women in midlife who strength train.
“Red light therapy does not create cellular health; it can only support it.”
Emerging Evidence
Human research on PBM, though in its infancy, is most consistent in a few key areas. Evidence most consistently supports benefits in regard to exercise recovery, including reductions in delayed-onset muscle soreness (DOMS) and improved recovery between training sessions. Benefits appear most reliable when it’s applied before exercise and when dosing parameters are appropriate. Research also suggests benefits for musculoskeletal pain and localized inflammation, such as in conditions like knee osteoarthritis and other sources of chronic pain. When protocols are followed correctly, positive effects on wound healing and localized tissue repair are also supported, particularly for the skin.
However, evidence is mixed for the efficacy of red light and similar therapies in the treatment of skin aging and collagen health. Some trials show modest improvements in wrinkles and texture, but results vary. Hair loss, particularly androgenetic alopecia, shows potential benefits when correct wavelengths and protocols are used, though outcomes depend heavily on device quality and individual biology. And when examining red light therapy and other PBMs’ effects on weight loss, metabolic health improvements, and longevity beyond skin outcomes, evidence is weak.
Use It Wisely
There’s still much research to be done on the applications of red light therapy and PBMs broadly, but it’s safe to say that they work best when used as an adjunct. If you try one of these treatments, always target tissues, apply it consistently, and use devices delivering therapeutic wavelengths. You should also respect the biphasic dose response (that is, more is not better), and integrate it with strength training, adequate protein, micronutrient sufficiency, quality sleep, and nervous system regulation.
Remember: red light therapy does not create cellular health; it can only support it. PBM can enhance efficiency within a functioning system, but it can’t override under-fueling, poor sleep, unmanaged stress, or inconsistent training.
Research on PBM, including red light therapy, suggests legitimate biological effects, particularly for recovery, pain modulation, and tissue repair, though more research needs to be conducted. Of course, its benefits are limited by the health of the system to which it’s applied. That means build the foundations first, then use red light therapy as support—not a shortcut.
Written by Arianne Missimer, Functional Medicine Expert
Photography by Paul Buceta
Hair & Makeup by Monica Kalra
