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Could your sugar cravings be secretly triggering migraine attacks even if you think you handle carbs fine?
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Welcome to Migraine Heroes, a podcast for people living with chronic migraines with years of pain,
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misunderstanding and lack of answers.
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I'm Diane Ducarne. I've helped more than a thousand people reduce the burden of migraines and feel more in control.
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My mission in life? To help a million people.
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Each episode brings you grounded insight into what your body might be asking for and what can truly help.
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Just to keep you fully supported, this podcast is educational.
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For diagnosis or medication, always work with your doctor.
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Now, take a breath and let's dive in.
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In this episode, you will learn why blood sugar instability might be a silent trigger you did not even connect to your migraines and how to spot it in your day-to-day life.
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The five surprising reasons glucose swings can spark headaches pathways, including the role of insulin, hormones,
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dehydration and brain inflammation, and practical sugar eating strategies that satisfy your cravings without fueling attacks.
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Stay with me till the end because you not only understand the biology of sugar and migraines,
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but also how to navigate cravings without guilt or without triggering pain.
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I will start by sharing with you something I'm not particularly proud of that really does not sit well with me and yet happened to me.
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When I was around 20 years old, I'd fast in the morning, fast at lunch, so no food until I'd come back from university and binge on a ton of sugar and nasty things.
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A full, nasty, nasty binge.
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My body was a complete mess.
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It was on the back of my skiing accident.
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I was not feeling good in my skin.
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One of my legs was about triple the other one.
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I had gained two full sizes and I was just getting more and more out of shape and out of balance the more I tried to fix it.
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At night, I could feel my body swollen and gain weight.
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I could feel the heat in my thighs.
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I hate that feeling of self-negligence I have after I would have gone typically through a cycle of perfection diet.
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I'd go from diet to binge.
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It took me a solid 12 years to fix the root cause of that problem and that is, in part, why I do what I do.
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Because it is so nice to live a life when you are freed and even if it's freed from cravings, in this case, sugar cravings.
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And the imbalances that caused it will be the objects of other podcasts, had to do with blood, had to do with kidney.
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Here, we are going to dismantle all of these feelings I was having after that ton of sugar and why it felt so bad
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and how to avoid these all together, especially for a migraine brain.
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So let's start plain and simple.
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What are blood sugar spikes? Blood sugar spikes are rapid rise in glucose after eating carbohydrate-rich foods, normally.
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When glucose increases in your bloodstream, your pancreas releases insulin to help cells absorb that glucose for energy.
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In people with fragile metabolic responses or very out of balance habits like mine,
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these spikes and subsequent drops can be dramatic, causing a rollercoaster effect rather than a steady stream to fuel the brain.
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So why does this matter for migraines?
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Your brain runs almost entirely on glucose.
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Sudden swings in glucose can alter cerebral blood flow, neurochemistry and neurotransmitter release,
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all known to influence headache pathways. Studies have shown that glucose instability increases inflammatory signaling
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and can trigger the trigeminal nerve pathways heavily implicated in migraine pain.
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A growing body of research indicates an association between dysregulated glucose handling and headache disorders.
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For example, population studies show people with higher post-mixed glucose variability
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report more frequent and severe headaches than those with smooth glucose curves. Now, let's walk through five
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super powerful mechanisms in which sugar is going to impact your brain
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and how each one can quietly push you closer to a migraine attack.
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So mechanism number one, insulin in the brain.
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High blood glucose is going to lead to surges in insulin.
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In people with insulin resistance or hyper-responsive insulin release,
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the brain may become temporarily starved of static glucose,
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triggering compensatory neurochemical cascades, including the release of stress hormones like cortisol, which are linked to migraine onset.
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That starvation and fullness oscillation is definitely something I felt.
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Mechanism number two, neuroinflammation.
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Rapid rise and falls in glucose is going to increase markers of inflammation, and that one I could clearly feel so strongly.
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Chronic neuroinflammation sensitizes migraine pathways, lowering your pain threshold.
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Elevated inflammatory cytokines have been documented a lot after glucose variability episodes.
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Mechanism number three, dehydration and electrolyte shifts.
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We know that sugary foods and drinks draw water into the gut and bloodstream shifts, influencing hydration status.
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And dehydration is a well-established migraine trigger.
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And when glucose spikes, your body loses more fluid as insulin shuttles glucose into cells.
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Now that one is a lot more subtle to feel, because you can feel puffed and swollen, yet you are dehydrated.
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Let me promise you that much. It's much harder to perceive.
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It is one I can actually only perceive now, because my diet is so balanced,
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I actually lose weight if I eat sugar, because I lose precious hydration.
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Not good for skin. I try not to do it too often, but sometimes a little indulgence is nice.
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Mechanism number four, serotonin mode. Blood glucose fluctuations is going to impact serotonin synthesis.
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Migraine is closely tied to serotonin pathways, and unstable glucose can provoke mood swings and pain sensitivity.
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Mood swings? Yes, absolutely. I was not feeling myself in those years.
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Imagine studies have shown altered serotonin receptor activity in migraine sufferers with glucose dysregulation.
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And then mechanism number five,
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autonomic nervous system stress.
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Glucose swings provoke sympathetic nervous system responses, the same fright or flight circuit that can tighten blood vessels and amplify
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Chronic autonomic stress is a common theme in migraine research, and I personally could perceive a lot more stress in those years.
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So the science points to blood sugar instability as a real physiological stressor that can tip your nervous system toward migraine
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vulnerability. So let's go east.
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Through an eastern lens, sugar in itself isn't bad, but it's directional. In traditional transmission,
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sugar has a sweet, damp-producing nature.
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Sweetness is meant to build and ground. It nourishes the spin and calms the nervous system when used
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correctly, and I want to insist on that, when used correctly.
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or eaten in isolation, it's going to do the exact opposite. It's going to slow things down,
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it's going to thicken fluid, it's going to create dampness.
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Think brain fog, think heavy limbs, think sluggish thinking, and that migraine-adjacent pressure feeling behind the eyes,
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This isn't about calories. It's about whether the brain receives clean,
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moving chi, or sticky,
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congested fuel. So here's where it gets edgy. The modern migraine brain already runs hot, fast, and sensitive.
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Sugar heats like a flare, a rapid rise that feels soothing for a moment, then drops the nervous system into instability.
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In traditional transmission terms, dampness blocks the clear yang from rising to the head, while liver chi gets trapped and frustrated.
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That's why sugar can calm you for 10 minutes and punish you for 10 hours.
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It's not a lack of discipline. It's a mismatch between the food's energetic speed and the brain's capacity to process it.
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Now Ayurveda backs this up completely, with different language, but the same warning.
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Sweet taste is grounding, but only when agni, your digestive fire, is steady. Refined sugar overwhelms agni,
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creating ama that clots subtle channels feeding your brain. So here's a translation for 2026.
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Sugar floods the system faster than your body can metabolize it into usable energy,
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so it turns into noise neurologically and hormonally.
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So both West and East are really telling us the same thing.
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Instability in your internal energy flow, whether measured as a blood glucose or chi, is a common pathway for triggering
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Now here's the advice of today's podcast.
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Don't remove sugar. Educate it. Sweet foods are not the enemy.
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Isolated sugar is.
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When sweetness is eaten on its own, it rushes the system and destabilizes a sensitive brain.
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But when you pair it with protein, healthy fat, fiber,
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or a touch of warming spice, it slows down, it integrates, and it becomes usable fuel rather than neurological noise.
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This isn't a trend. It's ancient metabolic wisdom. In Eastern traditions,
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sugar was always contextual.
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Balance the input and the brain stays steady. Ignore context and the migraine brain pushes back hard.
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every small step you take
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moves you closer to freedom.
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you are resilient,
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and you're no longer alone.
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Keep rising. Migraine Hero.
