I've spent years and thousands of dollars on supplements I couldn't prove were working.

I have AuDHD. I work in tech. I've pushed through startup launches running 100-hour weeks, producing the output of a full development team. My brain is infrastructure. When it drops, everything drops.

So I tried to optimize it.

I bought the nootropics. Built the stacks. Read the studies, adjusted dosages, cycled on and off. After all that, I still couldn't answer one question: is this actually working?

The Problem

The supplement industry sells research on population averages. Healthy college students. Elderly patients with cognitive decline. People nothing like you.

You take the recommended dose and try to feel whether it's working. That's not optimization. That's guessing.

I tried journaling. Rating my focus on arbitrary scales. But mood fluctuates. Sleep varies. I couldn't tell if citicoline was helping or if I just slept well.

You wouldn't run a business on vibes.

What I Learned

Cognitive performance isn't one thing. Working memory, processing speed, executive function, sustained attention. They respond differently to different interventions.

Collapse everything into a single "brain score" and you lose the signal. You can't tell if your reaction time improved while your working memory got worse.

The only useful research on your brain is your own. But nobody had built the tools to do it right.

What Thalen Does

Thalen gives you a baseline. Then shows you what moves it.

You test regularly. Introduce an intervention. See if your numbers change.

Does magnesium threonate actually help your memory? Is this stack worth the money? Did cutting alcohol do anything measurable?

Your brain is unique. Your data should be too.