Brain Health
·
June 2026
·
7 min read
I Was The Sharpest Person In Every Room I Walked Into.
Then Perimenopause Started Stealing My Brain
But Every Test Came Back Normal.
I spent eight months and hundreds of dollars trying to fix something two doctors insisted
wasn't broken. Here's the biological explanation they never looked for, and what finally worked.
![Lauren M.]()
👤
Lauren M.
Senior Director of Strategy · 23 years in consulting
Lauren at her home office — where she does her best thinking. Most of the time.
I have been in strategy consulting for 23 years. I've built my entire career on one thing: my mind. Not my credentials. Not my network. My ability to walk into any room, hold every detail, and think three moves ahead while everyone else was still catching up.
That was my edge. That was me.
And then one day at 46, right in the middle of a presentation I had prepared for weeks, I reached for a word I have used hundreds of times in my career and it simply wasn't there.
The word was acquisition.
I stood in front of twelve senior stakeholders — including three client executives — searching for it. It came back after what felt like a full minute but was probably closer to ten seconds. I smiled like nothing had happened. I kept moving.
I sat in my car in the parking garage for twenty-two minutes afterward.
Twenty-two minutes. Asking herself a question she wasn't ready to answer.
Is this the beginning of something I can't come back from?
It Got Worse
I told myself it was the travel. Two cities in four days. Anyone would blank. Except it happened again.
There was the team meeting where I introduced a colleague I've worked alongside for three years and went completely blank on her last name. In front of her. In front of the whole room. Her name is Patterson. I've known it for years. In that moment it was simply gone.
There was the 2 PM wall — every single afternoon — where something in my brain just stops. Not tiredness. More like someone reaches into your chest and unplugs a cable. You're sitting at your desk watching words stop connecting into meaning.
And then there were the 3 AM wake-ups. No sound. No hot flash. Just fully awake, lying there until almost 5, my brain solving problems nobody asked it to solve.
I started keeping a cheat sheet in my notebook. Words. Names. Key points I needed to make in meetings. Things I had always just known — now written in pencil because I couldn't trust myself to find them when I needed them.
The cheat sheet. April 7th.
The Dead End
I went to my doctor.
Everything came back normal.
I described exactly what was happening. She ran a full panel. Standard bloodwork.
Three months later. Different doctor. Same tests. Normal. "You might be entering perimenopause. Have you considered HRT?"
I tried HRT. The night sweats improved. My mood evened out. But the fog didn't lift. The words still disappeared. The 2 PM crash still came. I was still waking up at 3 AM. I was still keeping the cheat sheet.
I had done everything right. Two clean blood panels. And still losing the one thing I could not afford to lose — with nobody able to tell me why.
Two clean panels. Every test normal. And still not herself.
Eight Months of Trying
So I started trying
everything else.
Because that's what you do when the medical system tells you you're fine but nothing is fine. You research. You try things. You spend money. You hope.
- ✕Higher-dose HRT — mood steadied, fog stayed
- ✕NMN supplement — felt something for 4 weeks, nothing after week six
- ✕Second NMN brand — same story, earlier plateau
- ✕Nootropic stack from a functional medicine doctor
- ✕Magnesium, B12, Lion's Mane — various combinations
- ✕Full elimination diet — gluten, dairy, alcohol
- ✕Sleep specialist (14-rule sleep hygiene protocol)
- ✕Brain training app — six weeks, religiously, nothing
- ✕Therapy — helped with the anxiety about what was happening, not what was causing it
- ✕More caffeine. Then less. Both completely useless.
Eight months. Hundreds of dollars. Subscription cancellations, one after another.
Some of these things helped around the edges. But none of them touched the thing I couldn't name. The brain fog was still there. The word retrieval was still unreliable. I was still not me.
Why The NMN Failed
This is the part that
made me genuinely angry.
Once I understood the mechanism, I went back and looked at the NMN I had been taking. And I finally understood why it had worked for four weeks and then stopped.
NMN replenishes NAD+. It fills the bucket. That's what it does and that's all it does. But CD38 doesn't slow down because you added more NMN. CD38 is still running. Still draining. You pour NAD+ precursor in from the top. CD38 drains it out from the bottom. You feel something for the first month because you've temporarily outpaced the drain. By week six, the enzyme has caught up.
Filling a bucket with a hole in the bottom is not a solution. It's just a slower version of empty.
What I actually needed was three things working together: something to refill the NAD+, something to slow the enzyme consuming it, and something to cover the metabolic cost of the conversion process — because that conversion itself depletes another resource, and when that runs down, the fog gets heavier, not lighter.
Not one product I had tried addressed all three. Most only addressed one. Some didn't even contain what they said they did.
So if you gave NMN eight weeks and felt nothing: you were not failing. The bottle was. And even a genuine, pure bottle of NMN alone was never going to fix this. Not without the piece that plugs the hole.
What I Found
I spent three weeks looking.
Almost nothing addressed all three layers.
The category is flooded with single-ingredient NMN products. I found one brand that included a CD38 inhibitor — but at a dose too low to be meaningful, with nothing to address the methylation cost. Two layers addressed weakly. The third ignored.
Then I found a protocol built around all three simultaneously. The thing that stopped me wasn't the packaging. It was a sentence on the page:
"No standard blood panel measures this. That is why the labs came back normal."
Two doctors. Two clean blood panels. And nobody had known to look for the thing that was actually wrong. This brand had. They cited the same papers I had spent weeks reading. They weren't asking me to trust them — they were telling me to verify everything myself.
I ordered that night.
What Happened
My results were not dramatic.
But they were real.
And in some ways, real is more meaningful than dramatic.
First thing I noticed
The sleep moved first.
By the third night, I woke up at my usual 3 AM, started to spiral — and fell back asleep. Just like that. As if the thing that had been keeping me wired had simply been turned down. I woke up at 6:47 feeling something I hadn't felt in over a year. Rested.
6:54. Not 3 AM. Not 4:30. Morning.
Week two
The afternoon wall softened.
Around Day 11, I reached 3 PM with my brain still running. I checked my calendar to see if I had accidentally skipped a meeting — that was the only explanation I had. I hadn't. I was just still there. Still functional. Still thinking.
Around Day 30
Someone noticed before I did.
My executive assistant — who has worked with me for four years and knew something had been off — stopped me after a client presentation and said: "You were really on today."
I had not told her what I was doing. She just noticed.
The cheat sheet notebook is still in my desk drawer. I haven't opened it in six weeks.
That is what getting yourself back feels like.
Not fireworks. Just a colleague saying,
quietly, that you seemed like yourself.
Others Say the Same Thing
After I started talking about this — carefully, in the language of "I found some research you might find interesting" — I started hearing versions of my own story everywhere. The woman who'd started keeping notes on her phone before every meeting "just to have a backup." The colleague who told me, over dinner, that she'd been too afraid to get tested for dementia.
