Why Restless Legs and Anxiety Keep You Awake

If your legs feel jumpy, buzzy, or impossible to keep still just as your mind starts racing at bedtime, you're dealing with a real neuroendocrine pattern — not a failure of willpower or relaxation technique. In my practice, this is one of the most common patterns I see in women over 40, and it almost always traces back to shifting oestrogen, progesterone and iron levels colliding at exactly the wrong hour. Once you understand the mechanism, you have far more options than simply trying harder to relax.

What's happening in your body

Let's start with the leg restlessness, because it confuses so many women who never had it before midlife. Oestrogen isn't only a reproductive hormone — it's also a modulator of dopamine, the neurotransmitter responsible for smooth, coordinated movement and impulse control. When oestrogen begins its erratic perimenopausal decline, dopamine signalling can become unstable too. This is one of the key insights from the research I rely on: the drop isn't just about lower dopamine overall, it's about the dysregulated, unpredictable signalling that follows fluctuating oestrogen. That instability is what produces the classic "buzzy" or "electric" sensation in the legs, the overwhelming urge to move them, and the temporary relief you feel when you do. Restless Leg Syndrome affects up to 10% of adults in the US and is significantly more common in women than men (source: https://gennev.com/learn/restless-leg-syndrome-and-menopause), and the perimenopausal years are a particularly common time for it to appear or worsen for the first time.

Then there's the "tired but wired" feeling, which is a different but overlapping story. Progesterone is your calming hormone — it supports GABA, the neurotransmitter that quiets the nervous system at night. As progesterone declines earlier and more steeply than oestrogen in perimenopause, that natural evening calm becomes harder to access. What I see time and again in the women I work with is this exact combination: low progesterone leaving GABA activity thin on the ground, paired with a nighttime cortisol spike that should have settled hours earlier. That cortisol surge doesn't just fuel racing thoughts and anxiety — it also heightens neurological sensitivity in the legs, which is why the anxious mind and the restless legs so often arrive together at 2am rather than as two separate problems.

Iron deserves its own paragraph, because it's the piece most commonly missed. Iron deficiency, specifically low ferritin (the protein that stores iron), is one of the primary secondary causes of RLS, and it's extremely common in perimenopausal women who've spent years with heavy, unpredictable periods. Here's what I've learned from 20 years of working with women in this transition: a ferritin level that your GP calls "normal" on a standard lab report may still be neurologically too low for a woman with active leg symptoms. Ferritin needs to be adequate — not just technically within range — for dopamine synthesis and healthy nerve function, which is why so many women are told their iron is "fine" while their legs tell a different story entirely.

Finally, it's worth understanding that restless legs rarely show up alone in midlife. In my clinical experience, RLS is typically one point of a triad that also includes vasomotor symptoms — hot flushes and night sweats — and anxiety, all of which share overlapping neuroendocrine pathways involving oestrogen, dopamine and the stress-response system. Managing one in isolation rarely resolves the whole picture. There's also a gut-brain dimension that's often overlooked: serotonin and dopamine, the very neurotransmitters that regulate both mood and movement, are heavily influenced by gut health, so a nervous system already under hormonal strain can be further destabilised by poor gut function. This is part of why sleep disorders climb so sharply through this life stage — prevalence rises from 16–47% in perimenopause to 35–60% in postmenopausal women (source: https://pmc.ncbi.nlm.nih.gov/articles/PMC11901009), and women are 40% more likely to develop insomnia than men, largely due to this exact intersection of hormonal change and anxiety (source: https://sleepdoctor.com/pages/health/sleep-disorders-in-women).

Is it perimenopause or something else?

Restless legs, anxiety and disrupted sleep can overlap with several other conditions, so it's worth knowing the differences:

• ✦Restless Leg Syndrome (RLS) — an overwhelming urge to move the legs, often with tingling, crawling or buzzing sensations, worse at rest and in the evening, relieved by movement.
• ✦Nocturnal leg cramps — sudden, painful muscle contractions (often the calf), usually brief and sharply painful rather than an urge to move; not typically linked to anxiety.
• ✦General motor agitation from anxiety — fidgeting, restlessness or an inability to settle that stems from racing thoughts rather than a specific leg sensation; often improves with calming the mind alone.
• ✦Iron-deficiency anaemia symptoms — fatigue, breathlessness and restlessness that can mimic or worsen RLS; worth ruling out with bloodwork.
• ✦Obstructive sleep apnoea (OSA) — snoring, gasping or waking unrefreshed; risk rises sharply after menopause, with up to 56% of older women affected, and it's frequently missed in women because symptoms present differently than in men (source: https://sleepdoctor.com/pages/health/sleep-disorders-in-women).
• ✦RLS that returns after pregnancy-related RLS — if you had RLS during pregnancy and it resolved, then reappeared in your 40s, this isn't a coincidence; both episodes are typically driven by the same iron and dopamine-sensitivity pathways, reactivated by hormonal change.

What you can do about it

• ✦Ask for a full iron panel, including ferritin, not just haemoglobin. In my practice, correcting a "borderline normal" ferritin level is one of the single most effective interventions for RLS in women over 40 — because standard ranges don't account for the neurological threshold your legs actually need.
• ✦Consider magnesium glycinate or magnesium threonate in the evening. Magnesium supports GABA activity and muscle relaxation, which directly addresses the low-progesterone, low-GABA piece of the tired-but-wired pattern I see so often.
• ✦Talk to your doctor about HRT, including body-identical progesterone. Restoring progesterone can support GABA and calm the nervous system, while stabilising oestrogen may smooth out the erratic dopamine signalling behind the leg restlessness — though response varies, and this is a conversation to have with a knowledgeable provider.
• ✦Support your gut-brain axis daily. Since dopamine and serotonin production are so closely tied to gut health, prioritising fibre, fermented foods and reducing alcohol isn't just a digestion strategy — it's a nervous-system strategy.
• ✦Cut caffeine after midday and limit alcohol in the evening. Both are well-established RLS and anxiety triggers; alcohol in particular can worsen nighttime cortisol rebound, feeding the exact 2am wired feeling you're trying to avoid.
• ✦Build in a wind-down somatic practice, not just "relaxation." When RLS and anxiety strike together at 2am, try slow diaphragmatic breathing paired with gentle isometric leg presses against the mattress, or a warm foot soak — these directly engage the parasympathetic system rather than asking your mind to simply think its way calm.
• ✦Move your body earlier in the day, not right before bed. Regular daytime movement — walking, yoga, strength work — helps regulate dopamine and cortisol rhythms over time, which is why the women I work with who build this in consistently see fewer flare-ups than those relying only on nighttime fixes.

If you're not sure whether what you're experiencing fits this pattern, or you want a clearer picture of where your hormones and sleep sit right now, a structured assessment can help you see the fuller picture before your next doctor's appointment.

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Frequently Asked Questions

Why do my legs feel 'buzzy' or jumpy at night now that I'm in perimenopause? This is typically linked to fluctuating oestrogen, which modulates dopamine signalling in the brain and nervous system. As oestrogen becomes erratic, dopamine regulation follows, producing the tingling, crawling or electric sensations characteristic of restless legs, particularly in the evening and at rest.

Can anxiety triggers cause a restless leg syndrome (RLS) flare-up? Yes. Anxiety raises cortisol, which heightens nervous system sensitivity and can worsen leg restlessness alongside racing thoughts. The two often escalate together rather than separately, which is why managing anxiety and RLS as one connected pattern tends to work better than treating them individually.

Is there a connection between low ferritin and menopausal restless legs? Absolutely — low ferritin is one of the most common and correctable causes of RLS in women over 40, often linked to years of heavy perimenopausal bleeding. Importantly, a ferritin level within "normal" lab range may still be too low for symptom relief, so it's worth discussing your specific number with your doctor.

How do I stop the 'tired but wired' feeling when my legs won't stay still? This pattern usually stems from low progesterone paired with elevated nighttime cortisol. Magnesium, evening wind-down routines, reduced alcohol and caffeine, and addressing progesterone levels with your doctor are the most effective starting points I see work in practice.

Does hormone replacement therapy (HRT) help with restless leg syndrome? For some women, yes — stabilising oestrogen and restoring progesterone can ease both dopamine-related leg restlessness and anxiety-driven sleep disruption. Response varies by individual, so it's worth a specific conversation with a healthcare provider familiar with menopause and RLS.

Why did my RLS return during menopause after only having it during pregnancy? Pregnancy and perimenopause both involve iron depletion and dopamine-sensitive hormonal shifts, so it's the same underlying pathway resurfacing rather than a new, unrelated condition. Checking ferritin levels is usually the first useful step.

Related reading

• ✦Perimenopause Insomnia: Why You're Wide Awake at 3am
• ✦Does HRT Help You Sleep? What the Evidence Shows
• ✦Night Sweats and Sleep: Breaking the Cycle

Disclaimer

This content is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health.