
Did you ever wonder how certain plants have the incredible ability to heal both your brain and body?
Or perhaps you’ve been curious about how smells can directly trigger systems in your brain, promoting overall well being?
In today’s Thin Thinking episode, join me in this captivating interview with Jodi Cohen, founder of Vibrant Blue Oils, renowned functional practitioner who combines aromatherapy with the power of essential oils derived from plants.
With her experiences over the past 10 years, she has helped over 50,000 clients heal from brain related challenges, including anxiety, insomnia, autoimmunity, appetite, inflammation, and so much more.
She will also share the transformative effects of oils extracted from specific plants and plant oil blends.
So, grab your nostrils and come on into this enlightening episode of the Thin Thinking Podcast.
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In This Episode, You’ll Learn:
What led Jodi to helping and healing people with essential oils.
What are essential oils and aromatherapy and how does it help one’s healing?
The sympathetic fight or flight response and the parasympathetic rest and digest response.
Links Mentioned in this Episode
If you’ve ever stared at the ceiling at 2:00 a.m. with a racing mind… or found yourself “mysteriously” in the pantry at night… you already know the truth: your health habits don’t live in a vacuum. Stress, sleep, and your nervous system run the show more than willpower ever will.
In this episode of the Thin Thinking Podcast, Rita Black interviews Jodi Cohen—functional practitioner, bestselling author, and founder of Vibrant Blue Oils—about essential oils for anxiety and sleep and why they can work so fast. Jodi explains that smell has unusually direct access to the emotional brain (the amygdala), and that topical application can be more systemic than most people realize—especially when you use specific “reflex points” like the spot behind the ear associated with the vagus nerve.
This isn’t a “magic oil fixes everything” conversation. It’s a practical, body-based roadmap: which oils are most researched for appetite, sleep, inflammation, allergies, and how to use them in real life—when you’re stressed, tired, and busy.
(Friendly note: This article is educational and not medical advice. If you’re pregnant, have medical conditions, take medications, or are using oils with children, check with a qualified clinician.)
How do essential oils work in the brain and body?
Essential oils are highly concentrated plant compounds that can influence the nervous system quickly—especially through smell, which connects directly to the emotional brain.
Jodi breaks it down simply: essential oils are “the concentrated essences of plants.” She describes how steam distillation separates plant oil from water, and emphasizes just how concentrated they are—“about 50 cups of peppermint tea” can equal a single drop of peppermint oil.
That concentration matters because plants aren’t just “nice smells.” Jodi points out that plant compounds have long been used as medicine, and many pharmaceuticals have plant origins (she mentions examples like white willow → aspirin). Her big theme is this: plants can support the body returning to balance—without you having to white-knuckle everything.
Then she shares the brain piece that makes this conversation feel like a lightbulb moment:
- Smell is tied to survival (food, fire, predators).
- Because of that, smell has more direct access to the emotional brain than the other senses.
- Jodi explains that scent connects straight into the amygdala, which is why a smell can instantly drop you into a memory or mood.
So if you’ve ever walked past a scent and suddenly felt calm… or suddenly felt sad… that’s not you being “dramatic.” That’s your brain doing exactly what it was built to do.
The key insight: when you use essential oils intentionally, you’re not just “making your house smell good.” You’re sending signals to the nervous system that can shift state—fast.
What’s the difference between smelling oils and using them on skin?
Smelling oils targets the brain rapidly, while topical application can create local and systemic effects—especially when applied to specific reflex points.
Most people assume topical application is only “local,” like putting cream on a sore wrist. Jodi agrees that topical oils can work locally—but she adds a critical upgrade: there are reflex points (similar to acupuncture points) where applying oils can have broader effects.
She also emphasizes usability. Her philosophy is basically: if it’s complicated, you won’t do it. That’s why she likes simple routines:
- Keep the bottle where you already do a habit (like brushing teeth).
- Carry a small bottle in your pocket.
- Use oils in the moment, not as a “perfect wellness ritual” you’ll never maintain.
Three practical ways discussed in the episode:
- Smell it: quick brain access; helpful for mood, anxiety, cravings, “state changes.”
- Topical application: apply to skin; can be used at reflex points for systemic impact.
- Targeted placement: oils + “where you put it” is part of the strategy (ex: behind the ear for vagus nerve support; low back area for adrenal support).
If you’re someone who has tried “everything” and still ends up stressed-snacking or staring at the ceiling at night, this is the appeal: it’s small, direct, and doable even when life is messy.
Can essential oils help calm anxiety and panic in the moment?
Anxiety often reflects a nervous-system imbalance, and one fast way to shift state is to stimulate the opposite brain hemisphere through the left nostril.
This was one of the most practical “try it right now” moments in the interview.
Jodi shares a technique she learned from a functional neurologist: people prone to anxiety/panic often have an over-activated right frontal lobe. To balance it, you can stimulate the left frontal lobe.
How?
- Plug your right nostril with your thumb.
- Smell through your left nostril.
- Take 3–5 slow sniffs with the scent held about an inch below your nose.
Jodi’s point is refreshingly flexible: it doesn’t have to be fancy. You can use an essential oil, or even peel an orange and smell it. (She notes citrus tends to be uplifting.)
Why does this matter for weight mastery? Because panic and stress don’t just make you feel bad—they make you reactive. And reactive you is the version that says:
- “I can’t deal with this, give me sugar.”
- “I’ll start again tomorrow.”
- “I deserve a reward because today was awful.”
When your nervous system settles, you can actually think. You can choose.
And that’s what most people are missing: not information, not a better meal plan—state control.
Which essential oils can reduce cravings and appetite?
Peppermint and cinnamon are two of the most-discussed oils for appetite and blood sugar support, and smell alone can reduce the urgency to snack.
Rita asks the question her listeners are silently yelling: “Okay—how does this help with weight?”
Jodi points to what she calls the best research starting points:
- Peppermint oil: commonly used for appetite control; smelling it can help calm cravings.
- Cinnamon oil: associated with blood sugar support (often discussed in nutrition contexts).
She shares a practical trick for snacking urges—especially at night:
- Smell peppermint when you feel the “I need something” pull.
- If you want something low-waste, skip diffusing and do a tiny dish method: a small pile of salt + a drop of peppermint nearby.
She also describes a “blood sugar control” blend concept using peppermint + cinnamon + celery seed and mentions a kid-tested reality check: it worked during long soccer carpools with hungry teenagers. And if something helps a teen not lose their mind over hunger, it’s worth paying attention to.
The deeper insight is this: smell can create a sense of satiety. Jodi uses the restaurant example—by the time you’re done with the salad, you’re less ravenous. Scent cues and nervous-system cues shape appetite more than most people realize.
So if you’ve been blaming yourself for “lack of discipline,” this is a kinder truth with more power:
Your cravings aren’t a character flaw. They’re often a nervous-system and blood-sugar conversation.
How can essential oils support sleep—especially based on when you wake up?
The best sleep strategy is targeted: trouble falling asleep, waking at 1 a.m., and waking at 3 a.m. can signal different underlying patterns.
Jodi’s sleep explanation is what makes this episode so cite-worthy: she doesn’t treat insomnia like one big blob. She looks at when and how sleep breaks, then matches support accordingly.
If you can’t fall asleep (tired but mind racing)
Jodi explains the melatonin/cortisol relationship:
- Melatonin rises in response to darkness.
- Cortisol rises when you’re stressed and “running the to-do list.”
- When cortisol is high, melatonin tends to be low (and vice versa).
She describes a “circadian rhythm” approach: applying a sleep-support blend around the head (top of head, above the ears, back of head) to support melatonin release—while avoiding putting oils on the face before bed to prevent eye irritation if you toss and turn.
If you wake up around 1:00 a.m. wide awake
She calls this a blood sugar wake-up (nocturnal hypoglycemia):
- Blood sugar dips.
- The body releases emergency energy through the adrenals.
- Suddenly you’re awake enough to clean the kitchen.
Her approach: support the pancreas/blood sugar regulation so energy settles.
If you wake up around 3:00 a.m.
Jodi ties this to detoxification rhythms (liver/gallbladder activity) and suggests either applying support before bed or smelling it if you wake at that time.
Whether or not you adopt every detail, the framework is gold:
Sleep problems aren’t just “sleep problems.” They’re often nervous system + hormone timing + blood sugar timing.
And that means you can stop treating yourself like a broken person—and start treating sleep like a system you can influence.
For a deeper understanding of how sleep disruption directly impacts cravings, emotional eating, and weight regulation, listen to Episode 104 — Sleep and Weight, which reinforces why calming the nervous system is foundational to long-term weight mastery.
What does the vagus nerve have to do with stress, digestion, and weight?
Your vagus nerve is a primary “gear shift” between fight-or-flight and rest-and-digest, and supporting it can improve resilience, digestion, and emotional regulation.
This section is the heart of the episode.
Jodi tells a story that hits hard: doctors telling her to “reduce stress” while she had a bipolar husband, two kids, a full-time career, and zero realistic way to remove stressors. Her breakthrough was this:
It’s not always the stress in your life—it’s your response capacity.
She explains the autonomic nervous system in plain language:
- Sympathetic: fight or flight, danger mode (eyesight changes, digestion slows, blood shifts to limbs).
- Parasympathetic: rest, digest, heal mode.
Then she uses the zebra example from Why Zebras Don’t Get Ulcers: the zebra escapes danger, shakes to discharge stress, and returns to baseline. Humans… stack stress all day and never fully reset.
The gear shift, she says, is the vagus nerve (cranial nerve 10), connecting brain to body. She gives a specific location:
- Behind the earlobe, between the earlobe and the mastoid bone, there’s a small divot—where the vagus nerve is more accessible at the surface.
Her excitement is about stimulating that point to support parasympathetic activation. She mentions that vagus stimulation has been researched enough that there are medical devices used for conditions like epilepsy, migraines, and depression—and contrasts that with older, more intense vagus-stimulation hacks people don’t exactly line up for.
Why this matters for weight mastery:
- Digestion isn’t just what you eat—it’s also how your body processes it.
- In fight-or-flight, digestion and elimination can get sluggish.
- Emotional eating becomes more likely when the system is activated and reactive.
Jodi’s most weight-relevant line of reasoning is: parasympathetic support can create a moment of discernment. Instead of “I need cookies now,” you get options:
- “I could eat the cookie.”
- “Or I could walk, breathe, choose something else.”
- “Or I could have coffee and meet the emotional need without the spiral.”
That moment—the pause—is where mastery lives.
Which essential oils may help with inflammation, allergies, and immune support?
Essential oils are often used as supportive tools for inflammation, histamine reactions, and immune resilience—especially when paired with smart placement and simple routines.
Jodi shares several categories listeners commonly care about:
Inflammation support
She mentions research-linked oils for inflammation such as frankincense, ginger, and dill, and describes using an anti-inflammatory approach topically—especially after injuries—paired with support for circulation, lymph flow, and fascia.
She also adds a nervous-system layer: vagus stimulation can release acetylcholine, which sends a “calm inflammation” signal in the body.
Allergies / histamine support
Jodi mentions a “histamine balance” approach and describes placing oil behind the ears/back of the neck. She also describes a more targeted approach for nasal symptoms using a Q-tip near the nostrils (with care and common sense).
Immune support (when you feel a cold coming on)
Her routine is very “real life”:
- Epsom salt bath + baking soda (she frames it as alkalizing/supportive)
- Add lavender (mixed into salt before water so it doesn’t float)
- Then apply immune support oil to bottoms of feet + socks + bed
Even if you never do the full routine, the underlying pattern is what makes it useful:
When symptoms start, act early and make it easy.
What should you look for when buying essential oils?
Because essential oils are concentrated, quality matters—especially avoiding concentrated pesticides by choosing organic or wildcrafted sources.
Rita asks the consumer question most people forget to ask until they’ve already spent money: what should you look for?
Jodi’s answer is clear:
- Choose organic when possible.
- Or choose wildcrafted (especially when organic growing isn’t realistic for a particular plant source).
Her reasoning is blunt and important: if plants are sprayed with pesticides, you can end up with concentrated pesticides.
She also notes that she focuses heavily on blends because research often examines blends, and blends can work like a recipe—layering effects and improving delivery (she gives the clove + lime example as a “carry it in faster” combination).
FAQ
Do essential oils really help with anxiety?
They can support anxiety relief by influencing the nervous system and emotional brain through smell, and by supporting parasympathetic activation through targeted topical use.
What essential oil is best for sleep?
Many people start with lavender, but the “best” choice depends on your pattern—trouble falling asleep vs waking at 1 a.m. vs waking at 3 a.m. can point to different support strategies.
How do essential oils affect the brain so fast?
Smell has direct access to the amygdala (the emotional brain), which is why certain scents can shift mood and memory almost instantly.
Where do you apply essential oils for the vagus nerve?
A commonly discussed location is the small divot behind the earlobe near the mastoid bone, where the vagus nerve is considered more accessible at the surface.
Can peppermint oil reduce cravings?
Peppermint is commonly used for appetite support, and smelling peppermint can reduce the urgency to snack—especially between meals or at night.
Are blends better than single oils?
Single oils can be useful, but blends may be more effective because combining oils can layer benefits and improve how quickly oils penetrate or signal the nervous system.
What should I look for when buying essential oils?
Look for organic or wildcrafted oils when possible, because essential oils are concentrated and can concentrate pesticide exposure if the source plant is sprayed.
Conclusion
If your weight struggle feels like it has a mind of its own—if you’re “fine” until night hits, or stress hits, or sleep falls apart—this episode offers a powerful reframe: the battle isn’t just food. It’s your nervous system.
Jodi Cohen’s essential oils approach is simple but strategic: use scent for fast brain access, use topical placement for targeted support, and focus on shifting your body out of fight-or-flight so you can think clearly and choose intentionally. That’s not fluff. That’s the foundation of long-term mastery.
If you found this episode helpful, you might also enjoy this related Thin Thinking episode: