Brain Fog, Mood Swings, and Hormonal Hijinks: What’s Really Going On?

Brain Fog, Mood Swings, and Hormonal Hijinks: What’s Really Going On?

Some days, you’re smashing your to-do list like a boss. Other days, you’re standing in the kitchen wondering why you walked in there in the first place. Sound familiar? If brain fog, mood swings, and “did-I-just-yell-at-my-houseplant?” moments are becoming your new normal, it’s time we had a chat.

Your hormones are calling the shots. Whether it’s PMS, pregnancy, or perimenopause, those sneaky fluctuations are playing tricks on your brain - and your emotions. But here’s the thing: you’re not losing it, and you don’t have to just “deal with it.”

Let’s unpack what’s really happening, why your brain feels like it’s on a dodgy Wi-Fi signal, and how to get back to feeling fabulous (or at least functional).

Your Brain vs. Hormones: The Ultimate Frenemies

Women’s hormones - oestrogen and progesterone - don’t just handle your cycle; they’re also your brain’s BFFs. They keep everything running smoothly, from mood and memory to sleep and focus. But when these hormone levels dip, spike, or do the cha-cha? Chaos ensues.

Dr. Jayashri Kulkarni, a renowned expert in women’s hormonal health, explains it best:
“Menopause hits the brain first. For some, it shows up as panic, rage, or fog. It’s not all in your head - it’s in your hormones.”

Kulkarni dives into how these shifts affect women during puberty, pregnancy, and menopause. Hormones like oestrogen are powerful "neurosteroids" that influence serotonin, dopamine, and other mood-regulating chemicals.

When those hormones fluctuate? Your brain chemistry feels it.

What Happens to Your Brain During Hormonal Shifts?

Brain Fog in Perimenopause

When oestrogen drops, it’s like your brain starts buffering. Can’t remember names, appointments, or what you were just saying? Classic hormonal hijinks.

Pregnancy Shrinks Your Brain (Temporarily! Don’t Panic)

As Dr. Kulkarni and neuroscientist Dr. Lisa Mosconi explain, during the third trimester, your grey matter temporarily shrinks to focus on your baby’s development. The good news? It rebounds.

The Sleep Struggle is Real

Hormonal shifts mess with your sleep, and sleep is when your brain clears out its junk drawer. If you’re waking up feeling like a zombie on 4% battery, you’re not alone.

Is This Normal? Signs Your Hormones Are Messing With Your Brain

Hormonal transitions - whether you’re starting your first period or navigating menopause - can feel like a bad prank. Here’s what they might throw your way:

  • Brain Fog: Forgetting why you opened this blog (but we’re glad you’re here).
  • Mood Swings: Snapping one minute, sobbing over a puppy video the next.
  • Low Energy: Yawning through meetings and fantasising about a nap at 10 AM.
  • Gut Tantrums: Bloating and irritability that make you want to wear stretchy pants forever.

  • Long-Term Brain Health Risks: Post-menopause, those hormonal shifts can even impact memory and increase Alzheimer’s risks.

How to Kick Brain Fog and Mood Swings to the Curb

The good news? You don’t need to reinvent your life to feel better. Small, practical changes can help your brain - and sanity - bounce back:

1. Eat Like You Love Your Brain

Forget crash diets; this is about nourishing your noggin. A Mediterranean-style diet packed with leafy greens, berries, nuts, and omega-3-rich salmon is like a spa day for your brain. Bonus: it tastes good.

2. Move Your Body, but Keep It Chill

Moderate exercise - think brisk walks, yoga, or swimming - is your sweet spot. No need to punish yourself at the gym. (Unless you’re into that, in which case, go you!)

3. Sleep Like It’s Your Full-Time Job

Sleep is your brain’s clean-up crew, flushing out toxins and resetting for the day ahead. Build a calming bedtime routine - herbal tea, a book, maybe some meditation. Sorry, Netflix doesn’t count.

4. Gut Feelings Are Real

Your gut and brain are basically texting BFFs all day long. Keep your gut happy with prebiotics and probiotics - yoghurt, kimchi, and bananas are your new besties.

5. Stress Less (Yes, It’s Hard, but Worth It)

Chronic stress spikes cortisol, which is like throwing petrol on a hormonal bonfire. Mindfulness, journaling, or even dancing around your living room can help.

Why Hey Sister! Is Your Go-To for Hormonal Chaos

When your brain feels like it’s on a rollercoaster, Hey Sister! has natural solutions to support you:

  • For Brain Fog and Mood Swings: Our calming botanicals and prebiotic-packed solutions help reduce inflammation and balance your gut-brain axis.
  • For Period Pain Relief: Plant-based and anti-inflammatory, our formulas ease cramps so you can tackle the day pain-free.
  • For Perimenopause Support: Say goodbye to bloating, brain fog, and mood swings with products designed to support your body naturally.

Not convinced? Head to our Science Page to see why our key ingredients have been trusted for centuries. Spoiler alert: the ancients knew what they were doing.

We Want to Hear from You

What’s your funniest brain fog moment? Or your best trick for tackling bloating, mood swings, or those “I just can’t” days? Share your story in the comments - we’re all in this together, sister.

Final Thoughts

Hormonal changes can feel overwhelming, but they don’t have to control your life. With the right tools, knowledge, and support, you can navigate these transitions with confidence and ease.

Because thriving isn’t just possible - it’s your destiny. 

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