Why You Are More Susceptible to Anxiety & Mood Changes in Midlife
Part 2 of: Hormones, Inflammation & the Overstimulated Nervous System
Many women entering perimenopause and menopause are surprised by anxiety that feels unfamiliar.
This isn’t the “worried thoughts” anxiety they may have experienced earlier in life. It’s more physical.
Waking with a racing heart.
An inner restlessness.
A sense of being on edge for no clear reason.
This shift isn’t random. It’s tied to how changing hormones affect inflammation and the nervous system.
Hormones and the Calm Brain
Estrogen and progesterone both play important roles in keeping the brain steady and resilient.
Estrogen helps regulate serotonin and dopamine and protects against neuroinflammation.
Progesterone supports GABA, the brain’s primary calming neurotransmitter.
Together, they buffer stress.
As these hormones fluctuate and decline, the nervous system becomes more reactive. Inflammatory signaling increases. Stress hormones rise more easily. The brain’s “volume knob” gets turned up.
Anxiety becomes less cognitive and more physiological — felt in the chest, gut, muscles, and sleep patterns.
Mast Cells & Midlife Reactivity
At the same time, mast cells — immune cells involved in inflammation and histamine release — become more reactive during hormonal transitions.
This can contribute to:
- Heart palpitations
- Jitteriness
- Headaches
- Poor sleep
- Heightened sensitivity to stress or medications
This is why so many women say:
“Nothing in my life has changed, but my body feels anxious.”
Support Is Individual
Because these changes are tied to shifting hormone signals in the brain, some women find that carefully prescribed hormone therapy (HRT) helps stabilize mood, reduce anxiety, and improve sleep.
For others, non-hormonal strategies that support blood sugar balance, nervous system regulation, and inflammation are equally effective.
The goal is individualized support.
Midlife anxiety is often a hormonally influenced, inflammation-sensitive nervous system asking for care — not a character flaw.
Your Move: Calm your Nervous System Before It Spirals
When anxiety is inflammation-driven, the goal isn’t to push through. It’s to reduce inputs that overstimulate the system.
This week, try:
1) Prioritizing regular meals with protein to stabilize blood sugar. Protein provides amino acids that support neurotransmitter production and help stabilize the nervous system. Skipped meals can intensify irritability and nervous system swings.
2) Reducing or eliminating caffeine and alcohol, which amplify reactivity.
3) Creating a consistent wind-down routine to support sleep. Simple supports: screens off an hour before bed, a hot bath or shower, dim lighting, a dark room or sleep mask.
4) Getting outdoor light exposure within an hour or two of waking to anchor your circadian rhythm.
These foundational steps lower inflammatory stress on the brain and can soften anxiety more than you might expect.
Warmly,
Dr. Krista
Olive Says
I’ve been listening to all this talk about “nervous system reactivity”.
Let me offer a professional opinion.
When I wake up with a racing heart, it’s because the garbage truck is here.
When I feel restless, it’s because I need to go outside.
When I’m overstimulated, I take a nap in the sunshine.
You humans try to think your way out of what your bodies are telling you.
Maybe midlife isn’t about being “more anxious”.
Maybe it’s about your nervous system asking for fewer inputs, steadier rhythms, and more naps.
I support this plan.