Ashley Johnson, BSDH, RDH, OMFT

02/24/2026

Light: The Ultimate Probiotic

How Light Sculpts the Microbiome

Everyone is searching for the right probiotic.

Very few are fixing their light environment.

Your microbiome follows a circadian rhythm. Gut bacteria shift in diversity, activity, and metabolite production based on signals from your brain’s master clock — and that clock is set by light entering your eyes at sunrise.

Morning sunlight → retina → suprachiasmatic nucleus (SCN) → vagus nerve → gut.

That signal tells your digestive system:
• When to produce stomach acid
• When to release enzymes
• When to move (motility)
• When to repair and regenerate

We talk about food shaping the gut.

But light sculpts it first.

When you wake under artificial light, stay indoors all day, and use screens late into the night, circadian coordination fragments.

The result:
• Sluggish digestion
• Bloating
• Irregular acid production
• Microbial imbalance
• Increased inflammatory signaling

No capsule can override a broken circadian signal.

Your gut lining runs on mitochondrial energy.
Your mitochondria respond to light cues.
No light rhythm = no coherent gut rhythm.

Artificial light at night suppresses melatonin — one of the most important antioxidants in the gut. Flattened melatonin rhythms alter microbial balance and immune signaling.

The microbiome doesn’t just respond to what you eat.
It responds to the environment your nervous system is broadcasting.

Your gut is not just chemical.
It’s electrical.
It’s rhythmic.
It’s light-responsive.

Before asking,
“What probiotic should I take?”

Ask,
“When was the last time my eyes saw sunrise, when was the last time sun hit my gut?

Fix the light.
The terrain begins to shift.

You can help support gut health from a circadian and mitochondrial foundation — restoring rhythm, light environment, and cellular energy.

Modern life makes it difficult to consistently get enough natural light exposure — especially direct light on the body and abdomen — to fully support these rhythms.

Red light and near-infrared lights can help support mitochondrial energy and circadian signaling.

02/22/2026

Humming daily helps to maintain your health increasing oxygenation through amplified nitric oxide production & keeping your body primed for rest and repair through activation of your vagus nerve.

02/10/2026

Grateful for the opportunity to continue learn and connect with others at the Breathe and Thrive Symposium hosted by The American Laser Study Club.

It was a delight to hear all of the amazing presentations and open discussions & see many interdisciplinary points of view on ways to improve airway health throughout a lifetime.

02/03/2026

02/02/2026

01/16/2026

01/09/2026

Dental caries is a multifactorial disease and affects a large portion of the population. It is one of the most prevalent health conditions in children. A

12/22/2025

11/29/2025

Your dentist wasn't lying when they said brushing before bed matters. But it's not just about your teeth anymore. New research reveals that skipping your nighttime brush could be silently damaging your heart. The bacteria multiplying in your mouth while you sleep might be doing something far more dangerous than causing bad breath, and scientists now have the evidence to prove it.

11/27/2025

11/26/2025

Oxytocin influences so much––your stress response, insulin sensitivity, digestion, even appetite cues.

And the way you support it isn’t complicated. It’s found in the everyday moments we tend to overlook…the laughter, hugs, quiet prayer time, and the people who make you feel loved and peaceful.

Your community might be doing more for your metabolism than you realize.

If you want to understand how hormones shape your energy, cravings, and weight…and how to balance them naturally...comment ‘HORMONE’ and I’ll send you my hormone masterclass.

11/15/2025

With the premiere of Wicked For Good less than a week away, we are inspired! 💚✨🩷

Our lymphatic system is our body’s unique detoxifying drainage system.

In our modern sedentary lifestyles our lymph system can become stagnate. Stagnation leads to puffiness around our face, stiffness & pain in the neck and shoulders, brain fog, poor circulation, restless legs, and tingling or heaviness in arms & hands. With lack of support from our lymphatic system, our central nervous system goes into sympathetic overdrive staying overly alert & missing out on rest and repair.

Light, slow nasal breathing + Manual Lymphatic Drainage (MLD) massage can activate your parasympathetic nervous system which promotes detoxification & repairing balance to the body’s recovery.

Before bedtime, light, slow nasal breathing & MLD is a great way to unwind & prepare for a good night’s rest. Lightly tapping or massaging around your collarbone, jawline & face, under your armpits, tracing to the left under your rib cage around your stomach, hip crease & behind your knees are essential areas to support your lymphatic system.

Rest well, friends 🌙