Why Some Work ... and Others Don't
Marcy White, LAc, Dipl. Ac., MAc, CFMP
Low-level laser therapy (LLLT), also known as photobiomodulation, is having a moment in acupuncture circles for good reason. With a growing body of research supporting its role in reducing inflammation, enhancing circulation and stimulating mitochondrial activity, more practitioners are exploring its application in fertility care.
But in the nearly 20 years I’ve used laser therapy in clinical practice, I’ve seen a wide range of outcomes, not just from my own work, but also from colleagues reaching out with questions, curious patients, and practitioners who have invested in a device and are not sure if it’s the right one to use for their fertility treatments.
It’s not because laser therapy doesn’t work. It’s because many of us don’t realize how much the details matter.
Not All Light Is Created Equal
One of the most common assumptions I hear is that “any red or infrared light is therapeutic.” In reality, the wavelength, power, dosage, and delivery method all affect how light interacts with the body – and whether it reaches the target tissue at all.
For example, one Class 3b device may only stimulate surface-level tissue, which may be adequate for inflammation in the skin, but insufficient for deep uterine circulation. Conversely, a laser with the right wavelength and sufficient power can penetrate several centimeters and influence blood flow in the ovaries or endometrium.
These nuances are critical in fertility care, where timing, precision and cumulative effects matter.
The Problem With One-Size-Fits-All Protocols
It’s tempting to adopt a protocol you’ve seen on social media or heard at a seminar and expect repeatable results. But photobiomodulation is dose-dependent and patient-specific. I’ve learned to adapt protocols based on:
- Cycle phase (follicular vs. luteal)
- Age-related ovarian decline
- Coexisting inflammation
- Medication interactions
- Timing relative to IVF transfers
Without tailoring these parameters, results can be inconsistent.
Device Marketing vs. Clinical Utility
Another hurdle is the sheer number of devices now marketed to acupuncturists. Some are effective, evidence-based tools. Others are marketed with vague specs, flashy terms or misleading claims.
In my own clinic, I’ve had patients bring in home-use light devices and ask, “Is this the same thing you use?” The answer is almost always “no,” but that question reminds me how easy it is to confuse light exposure with targeted therapy.
If you’re unsure whether a device delivers what it promises, start by asking:
- What’s the true wavelength range?
- Is it continuous or pulsed?
- What’s the power density (mW/cm²)?
- Is it FDA-cleared for therapeutic use?
Where Things Go Right
When the parameters are correct and the treatment is matched to the clinical scenario, results can be transformative. I’ve seen women with repeated IVF failures finally get pregnant. I’ve witnessed shifts in menstrual regularity and endometrial thickness, and even quality-of-life metrics like sleep and mood improvements.
But these outcomes didn’t happen by chance. They came from careful protocol design, regular reassessment, and staying informed about the evolving science of photobiomodulation.
A Call for Thoughtful Curiosity
I’m not here to advocate for one brand, protocol or philosophy. What I am advocating for is thoughtful curiosity. Laser therapy is powerful, but it’s also technical. Our patients, especially those navigating the emotional terrain of fertility struggles, deserve more than guesswork.
If you’re integrating photobiomodulation into your practice or thinking about it, take the time to understand the principles behind it. The more you know, the more effective (and confident) you’ll become.
Editor’s Note: This is the latest installment in a new multi-author column focused on fertility / reproductive health. If you’d like to be considered for inclusion in the column, send your article to editorial@acupuncturetoday.com for review. Visit the Fertility Health column page here.
