Could Low Blood Sugar Be Affecting Your Mood More Than You Realize? Episode 508

Have you ever noticed how different you feel when you haven’t eaten for a while?

Maybe you get irritable.
Maybe you feel shaky, nervous, or overwhelmed.
Maybe your thoughts become foggy and scattered

Maybe you suddenly feel anxious for no apparent reason.

 

Many people assume anxiety is purely emotional or psychological.

But sometimes…it’s physiological.

Sometimes your body is trying to tell you something very important and it might be:

“You need fuel.”

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In my last podcast, “The Fog of Overwhelm: The Trance of Modern Life”, one the recommendations I make for dealing with overwhelm it to make sure you eat.

Today I want to talk about the connection between blood sugar, overwhelm, anxiety, mood, brain fog, irritability, fatigue, and even panic attacks. Because understanding this connection could dramatically change the way you feel every single day.

The Story That Opened My Eyes

When I first got married, I was mostly at home studying for hypnotherapy college and building my hypnotherapy practice.

My wife would come home from work, probably a 40-minute drive, sometimes in a really bad mood. Irritable. Crabby. Short-tempered.

At first, I thought:
“Did something happen at work?”
“Is she upset with me?”
“What’s going on?”

Just so happens that at the time, we were learning about the impact of low blood sugar at the Hypnosis Motivation Institute where I was getting my training.

Then I noticed a pattern.

By the time my wife got home, she hadn’t eaten in hours.

So, I told her, I said “Hey, this is what we’re learning in school. Maybe you should eat something before you leave work or carry a protein bar with you or something?”

She did and was a different person when she got home from work: calm, relaxed and happy.

And I realized:
This wasn’t necessarily emotional, it was biological.

Her brain and body were running on empty.

I’m the same way.

If I go too long without eating, I don’t feel good either.
I can become unfocused, edgy and short tempered. Hangry!

And there’s a reason for that.

It’s called low blood sugar.

Your Brain Runs on Glucose

Your brain is one of the most energy-demanding organs in your body.

Even though it only makes up a small percentage of your body weight, it uses a tremendous amount of energy.

It’s preferred fuel source? Glucose is also known as blood sugar.

Glucose comes from the foods you eat and circulates in your bloodstream as blood sugar.

When blood sugar is balanced, your brain and nervous system function smoothly.

But when blood sugar drops too low, your body interprets it as a threat.

And what does the body do when it senses danger?

It activates survival mode.

Low Blood Sugar Triggers Fight-or-Flight

When your blood sugar drops too low, your body releases stress hormones like:

• Adrenaline
• Cortisol
• Norepinephrine

Why?  Because your body is trying to save you.

It wants to raise your blood sugar quickly so your brain can keep functioning.

But here’s the problem:

Those same stress hormones are also involved in anxiety and panic.

So low blood sugar can create symptoms that feel exactly like anxiety:

• Racing heart
• Sweating
• Shakiness
• Nervousness
• Tight chest
• Dizziness
• Tingling
• Feeling overwhelmed
• Sudden fear

Sound familiar?

Someone may think:
“I’m having an anxiety attack.”

But the trigger might be physiological instability caused by low blood sugar.

Why High-Carb Foods Can Make Things Worse

Now here’s where it gets even more interesting.

A lot of people think eating sugary or high-carb foods help anxiety because they temporarily feel better afterward. And in the short term, they do. Foods like:

Candy.
Pastries.
Sugary coffee drinks.
White bread.
Chips.
Soda.

These foods can rapidly raise blood sugar because they are quickly digested and create a temporary boost in energy or mood.

But then comes the crash.

Your body releases insulin to bring blood sugar back down. But sometimes it brings it down too fast. Now your blood sugar plummets.

And suddenly:

• You feel exhausted
• Irritable
• Foggy
• Anxious
• Craving more sugar

This creates a roller coaster effect.

Up. Down. Up. Down. It’s the Blood Sugar Roller Coaster, and your nervous system pays the price.

Anxiety Without Understanding the Cause

One of the most difficult things about anxiety is that people often don’t understand why it’s happening. So, the brain tries to explain it.

And sometimes it explains it incorrectly.

Imagine this:

A person is running late for work because they were drinking alcohol the night before. They skip breakfast.
They drink coffee.
They’re stressed.
Their blood sugar crashes while driving on the freeway.

Suddenly they feel:

• Dizzy
• Panicky
• Short of breath
• Disoriented
• Their heart racing

Their mind says:
“Oh no—I’m not safe driving.”

Now the brain begins associating panic with driving. The next time they drive, they become hypervigilant. They are thinking “What if it happens again?”

Eventually they may avoid driving altogether. But the original trigger may not have been driving.

It may have been low blood sugar.

The same thing can happen:

• On airplanes
• In grocery stores
• At concerts
• During meetings
• In elevators
• At the gym

A physiological event becomes psychologically attached to a location or activity.

And once that association is created, the mind starts anticipating danger.

Why Some People Wake Up Anxious at Night

Low blood sugar can even affect sleep.

Have you ever woken up in the middle of the night anxious for no reason?

Heart pounding.
Mind racing.
Wide awake at 3 AM.

Sometimes this can happen because blood sugar drops during the night.

Your body responds by releasing stress hormones to raise it again which wakes you up.

This is one reason why both under-eating and overeating before bed can interfere with sleep quality.

Eating too much sugar late at night can create a blood sugar spike followed by a crash while you’re sleeping, and your nervous system reacts.

Brain Fog and Emotional Instability

Low blood sugar doesn’t just affect anxiety. It affects cognitive performance too.

When blood sugar becomes unstable, people may experience:

• Brain fog
• Poor concentration
• Forgetfulness
• Low motivation
• Emotional reactivity
• Mood swings
• Fatigue

Think about how hard it is to stay emotionally balanced when your brain is under-fueled.

• Your ability to cope decreases.
• Small problems feel bigger.
• Patience disappears.
• Stress tolerance shrinks.

And then people blame themselves.

“I’m too emotional.”
“I’m weak.”
“What’s wrong with me?”

But sometimes your brain simply needs stable nourishment.

Caffeine and Anxiety

Now let’s add caffeine to the mix.

Many people:

• Skip breakfast
• Drink coffee
• Run on stress
• Eat sugar later

This combination can be brutal for the nervous system.

Coffee stimulates adrenaline release. If your blood sugar is already unstable, caffeine can intensify anxiety symptoms dramatically.

That doesn’t mean everyone has to give up coffee.

But it does mean you should pay attention to how caffeine affects you, especially when you haven’t eaten properly.

The Mind-Body Connection

I often talk about the mind-body connection and this is a perfect example.

Your thoughts affect your body.
And your body affects your thoughts.

They work together continuously.

You cannot separate mental health from physical health.

• Sleep
• Hydration
• Movement
• Nutrition

These things matter.

Your brain is part of your body. The healthier your body becomes, the more stable your emotional state often becomes as well.

Notice Your Patterns

If you struggle with brain fog, anxiety, irritability and any of the symptoms that I’ve mentioned, one of the best things you can do is start noticing patterns.

Keep a simple log for a week or two.

Pay attention to:

• When you eat
• What you eat
• Your energy levels
• Anxiety levels
• Sleep quality
• Mood changes
• Brain fog
• Irritability

You may begin seeing connections you never noticed before.

You might discover:

“I always feel anxious mid-afternoon after skipping lunch.”
“I feel terrible after sugary snacks.”
“My sleep is worse when I overeat at night.”
“I get shaky and irritable when I go too long without protein.”

Awareness creates power.

Simple Ways to Stabilize Blood Sugar

Here are some simple things that may help support more stable blood sugar and nervous system function:

Eat Regularly
Don’t go excessively long without eating if you know it affects your mood or energy.

Prioritize Protein
Protein helps stabilize blood sugar and keeps you feeling satisfied longer.

Reduce Excess Sugar
The more dramatic the spikes, the more dramatic the crashes.

Pair Carbs with Protein or Healthy Fat
This slows absorption and creates more stable energy.

Stay Hydrated
Dehydration can worsen fatigue and anxiety symptoms.

Watch Excess Caffeine
Especially on an empty stomach.

Get Enough Sleep
Poor sleep negatively impacts blood sugar regulation and stress sensitivity.

Anxiety Is Not Always “All in Your Head”
This is important: if you struggle with anxiety, panic attacks, irritability, fatigue, or brain fog, don’t automatically assume it’s purely psychological.

Your body may be playing a major role.

Now of course, anxiety can have many causes:

• Stress
• Trauma
• Thought patterns
• Lifestyle
• Hormonal issues
• Nutritional imbalances

But blood sugar instability is one factor many people overlook.

And when you stabilize the body, you often calm the mind.

Final Thoughts

Your body is always communicating with you.

The question is:
Are you listening?

Sometimes anxiety is not a sign that you’re broken.

Sometimes it’s your nervous system asking for balance.

• More rest.
• Better nourishment.
• More stability.
• Better self-care.

And when you begin giving your brain and body what they truly need, you may notice something remarkable:

You feel calmer.
Clearer.
More emotionally steady.
More like yourself again.

Here’s a quote for you:

“You’re not you when you’re hungry!”

Snickers, the candy bar, said that! (Remember those funny commercials?)

Thanks so much for listening today, I hope you found this helpful.

Oh, and just in case you don’t know, you can listen to this podcast on Spotify, Apple podcasts, Soundcloud or TedinYourHead.com.

You can also watch it on my YouTube Channel Ted A Moreno, Certified Clinical Hypnotherapist.

One more thing: if you need support with anxiety or managing your blood sugar, reach out to me for a complimentary phone consultation at Tedmoreno.com/contact, I’ll get back to you in 48 hours.

Take care of you for those you love. Bye!