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By Aleena Ashraf, neuroscientist, published author and part of Véa’s Clinical Advisory Board
Menstrual data is missing a critical layer: the mind.
The menstrual cycle won’t be fully understood until we track the mind alongside the body.
We measure the body exceptionally well.
Just three period-tracking apps, Clue, Flo and Period Tracker, have been downloaded over 200 million times combined.
Dates, symptoms, mood and fertility windows are all diligently monitored.
Still, logging when a period starts doesn’t document what it’s like to live inside a cycle.
A recent survey reported 61.9 per cent of participants used period-tracking apps for more than two years, yet only surface-level data could be observed.
Mental clarity, motivation, resilience, mental load, none of this gets recorded.
Which is why the data can’t answer one of the most common questions women ask themselves: why does the same task feel manageable one week and impossible the next?
Get this right and the payoff is significant: more precise, predictive and personalised care.
Neuroscience and the menstrual cycle
The menstrual cycle isn’t only a reproductive process.
It’s a neurobiological rhythm that the brain actively regulates.
Ignoring that means overlooking the system driving much of what gets logged as “mood”.
After menstruation, rising estradiol lifts serotonin and dopamine, sharpening mood, motivation and mental efficiency.
This is the phase where pushing hard toward a goal tends to feel the easiest.
Later, progesterone takes over and increases GABA, the brain’s calming neurotransmitter.
The body shifts toward rest and recovery: slower pace, more introspection and less drive for risk.
The brain isn’t weaker in one phase and stronger in another. It’s continuously realigning to match hormonal change.
This isn’t a drop in capability but a shift in cognitive mode.
Hormonal changes aren’t disruptive – they’re informative.
The subjective experience of every woman living through them is exactly where current data systems fall short.
The lived experience is missing
What it actually feels like to think and function differently across the month remains almost entirely undocumented.
Women keep pushing through their cycle to meet constant demands at work and at home.
The cost doesn’t show up immediately but builds quietly, then surfaces as burnout, anxiety or withdrawal.
The turning point is rarely dramatic. It lives in small, recurring thoughts:
“Why does this feel harder today?”
“Why can’t I think straight?”
“Why is everything triggering me?”
During the luteal phase, irritability is usually treated as a symptom to control or tolerate.
There is lower tolerance for social demands, heightened sensitivity to routine tasks and occasional emotional outbursts.
But tracked over time against the cycle’s stages, it stops looking random.
It becomes a measurable signal of cognitive and emotional load.
The same is true for the urge to withdraw.
Read in isolation, it looks like disengagement, a dip in performance or a personal shortcoming.
Read longitudinally, it frequently lines up with the phase where the brain is shifting toward introspection and recovery.
Rather than seeing it as avoidance, it’s regulation.
Picture a professional in a high-pressure role.
In one phase of her cycle she is sharp, decisive and efficient.
In another, she is re-reading the same email, struggling to focus and disproportionately overwhelmed by routine tasks.
Without context, that looks like inconsistency.
With context, it’s a pattern that can be understood, anticipated and supported.
Journaling reveals the missing layer
Journaling is already a proven way to surface this deep layer.
It’s well established for improving mental health and stress regulation.
A 2022 systematic review reported a 9 per cent decrease in anxiety levels through writing.
But its potential goes further than that.
Journal entries build a longitudinal record of how someone’s inner state and hormone-linked rhythms evolve across the cycle, across roles, across time.
The problem is journaling can be hard to sustain without structure.
It’s also tricky to know what to write, as it’s self-directed.
Insights end up buried in raw writing, disconnected from the neurological pattern actually driving it.
Véa is a digital platform that guides women to document their lived experience over time, surface recurring trends and put words to what they’re going through.
It develops freeform writing into systematic self-reflection through a framework supported by neuroscience.
This captures snapshots of how women are thinking and feeling across different phases of the cycle.
Guided support peels back layers of cognition and emotion, surfacing what current menstrual data misses.
No single narrative gets imposed on every user.
Instead, the method leaves room for genuinely different perspectives of productivity to emerge.
Performed well, this turns journaling into a system of signals, not a pile of disconnected entries.
Done responsibly, privately and anonymously, this kind of data could help understand more about female health.
It isn’t diagnostic and it isn’t here to label anyone. But it can feed clinical understanding and future research alike.
What changes if we take this seriously
Treat the menstrual cycle as a neurological framework rather than a purely reproductive one, and the entire model of care begins to change.
It’s possible to identify strain earlier.
Work can be paced differently.
For clinicians, it means treatment plans that account for cyclical variation in symptoms and inner state.
For researchers, it gives a richer dataset that moves past static and linear measurements toward dynamic patterns.
For employers, it’s a chance to build more personalised ways of working around shifting cognitive load.
For families, it’s a reason to recognise and redistribute the invisible load carried by female homemakers.
This also fits within the broader shift toward preventative healthcare.
Catch the early signs and intervention can happen before burnout or more serious conditions take hold.
The menstrual cycle may be one of the richest data systems we have, if we are willing to read it correctly.
Learn more about Véa at veajournal.com
