Why Do I Feel Like I’m Rocking on a Boat?

What this weird symptom might be telling you about your hormones, histamine, and blood sugar.

Welcome to the Mystery Symptom Series

Some symptoms are easy to explain. Others make you feel like your body’s glitching. I get asked about these all the time and have experienced many of them myself along my healing journey. I’m a proud nerd and love digging into the why behind the strange, often dismissed stuff. If you’ve ever felt like a walking medical mystery, you’re in the right place.

This post kicks off a series where we dig into those “what even is this?!” symptoms and explore how things like hormone shifts, nutrient imbalances, histamine overload, and blood sugar swings can all play a role.

You can check out past posts that I'm going to add to this series, since they fit the bill. I went into air hunger and burning leg pain last month. Keep an eye out. Up next up is internal vibrations. Okay, on with the current mystery symptom:

Do you ever feel like you're moving when you're not? A feeling of swaying, rocking, or floating sensation, like you just got off a boat, is more common than people realize. Sometimes it pops up after travel, scrolling your phone too long, or completely out of the blue. If we tell other people about it (even doctors), a lot of them look at us like we're crazy. It's not really dizziness. It's not exactly vertigo either. But it's definitely unsettling.

I dealt with this and went through a big workup - MRI, CT, ENT visits, eye doctor, and eventually was sent to vestibular rehab (which is kind of like physical therapy for your balance system). But it didn't help! After a lot of healing, it just went away. But why? How? I've done way more research and connected some dots, so let me clue you in on what I've found.

This internal rocking often shows up in women dealing with hormone shifts, histamine overload, blood sugar imbalances, or all three.

Rule these out first

Before we dig into root causes, it’s always a good idea to rule out a few bigger issues:

• Vestibular disorders (like BPPV or vestibular migraines)

• Mal de Débarquement Syndrome (MdDS) – often follows travel, but not always

• Cervical instability or Chiari malformation

• POTS or dysautonomia (especially with lightheadedness or heat intolerance)

• Post-viral or Lyme-related inflammation

• Side effects from meds – especially antidepressants, benzos, or antihistamines

• Vision-vestibular mismatch – screens, lighting, and depth perception issues

If symptoms are severe, sudden, or affecting your ability to function, check in with a trusted provider to rule out structural or neurological causes.

The Hormone–Histamine–Blood Sugar Trifecta

Estrogen & Progesterone

↣ Estrogen affects inner ear fluid and histamine levels. Sudden spikes (ovulation, pre-period, HRT changes) can lead to motion sensitivity and swaying.

↣ Low progesterone means less calming GABA activity & more nervous system reactivity.

↣ This is why many women notice this rocking sensation worsens mid-cycle or premenstrually, or suddenly shows in during perimenopause

Histamine & Mast Cell Activation

↣ Histamine affects blood vessels and nerves involved in balance.

↣ Histamine surges can trigger that internal rocking sensation. Suspect it more if paired with anxiety, heart palpitations, or hot flashes.

↣ Estrogen increases histamine, while progesterone helps calm it down. But histamine also causes more estrogen to be released. Breaking that cycle and balancing things out is key.

If that sounds familiar, grab my histamine & hormone guide here. It’s free and will help you connect the dots.

Blood Sugar Crashes and Cortisol Surges

↣ Dips in blood sugar are a stress signal that leads to a cortisol spike and the "fight-or-flight" surge

↣ Especially common in women skipping meals, under-eating, or riding the caffeine train with no fuel.

↣ Bonus sign: waking up at 3am with a racing heart or weird dreams. Definitely look at blood sugar.

Missing Nutrients Can Cause Misfiring Balance Signals

Let’s not forget your nutritional foundation. Several key nutrients keep your nervous system grounded. When they’re low, your body can start misfiring like a badly tuned radio.

Magnesium

↣ Supports nervous system regulation, smooth muscle relaxation, and blood sugar balance

↣ Deficiency can amplify stress responses and histamine flares

Clues it's low: Cramps, anxiety, insomnia, headaches, irritability

Download my Magnesium Guide for types, food sources, and my go-to supplement picks.

B Vitamins (especially B1, B2, B6, B12)

↣ Support mitochondrial energy, nerve communication, and hormone metabolism

↣ Thiamine (B1) in particular is key for vestibular balance and is often low in those with POTS or fatigue

↣ B12 and B6 are both involved in histamine breakdown, so too much or too little can cause issues

Clues they’re low: Tingling, brain fog, anxiety, visual disturbances, fatigue. If you’ve got gut issues, methylation SNPs, or a restricted diet, this is a major thing to explore.

Vitamin D

↣ Helps regulate immune activity, inflammation, and neuromuscular stability

↣ Deficiency has been linked to balance disorders in both older adults and perimenopausal women

Clues it’s low: Achiness, fatigue, mood swings, frequent colds, seasonal worsening

Iron & Cofactors (Copper, Zinc, Vitamin A)

↣ Iron helps deliver oxygen to the brain and support DAO activity for histamine breakdown

↣ Low iron can be a key part of histamine overload, fatigue, and brain fog

↣ Zinc is key for vestibular and hormone function

↣ Copper and zinc imbalances can make the histamine picture worse

Clues it’s low: Fatigue, shortness of breath, hair loss, brittle nails, pale skin

Sodium & Potassium (Electrolytes)

↣ Essential for fluid balance, nerve firing, and adrenal health

↣ Low levels can cause unsteadiness, palpitations, or feeling “floaty”

↣ Especially relevant if you’re sweating more, have low aldosterone, or are salt-depleting from stress

Clues they're off: Dizziness when standing, salt cravings, fatigue, anxiety, brain fog. Definitely a huge factor for us POTS girlies.

What You Can Do

• Track when it happens (cycle day, foods, stress, sleep)

• Eat enough protein and carbs regularly (sorry, but no more just coffee for breakfast)

• Hydrate with electrolytes (not just water)

• Support your nervous system with breathwork, humming, cold water or an ice roller on your face, or vagus nerve exercises

• Consider testing for nutrient deficiencies or histamine intolerance if symptoms persist

• Talk to a practitioner if it’s persistent, worsening, or disrupting your life

TL;DR

That "rocking" feeling is surprisingly common. It's often a clue! It can be tied to hormone fluctuations, blood sugar swings, histamine overload, and nutrient imbalances. If you’ve been dismissed or told “your labs are fine,” it’s time to dig deeper.

Want help figuring it all out? I love a good mystery! Contact me or look into ways to work together if you want help running tests for nutrient deficiencies, hormones, or gut health. Also, if Hashimoto's is part of your picture, check out my Back to Balance program to get to the root.

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Disclaimer: I do not diagnose, treat, prevent, or cure any disease or condition. Nothing I share is intended to substitute for the advice, treatment or diagnosis of a qualified licensed physician. I may not make any medical diagnoses or claim, nor substitute for your personal physician’s care. It is my role to partner with you to provide ongoing support and accountability in an opt-in model of self-care and any changes should be done under the supervision of a licensed physician.