Perimenopause depression statistics: how common is it?

There's no single agreed percentage for how many women get depression during perimenopause. Studies measure it in different ways:

• Symptom scores on a depression scale
• Diagnosed major depressive episodes
• Self-reported low mood

Each method gives a different number, and most studies also follow different groups of women, which makes the figures hard to compare directly.

The clearest figure available comes from an 8-year cohort of premenopausal women with no depression history. High depressive symptom scores were over four times more likely during the menopause transition than beforehand (odds ratio 4.29, 95% CI 2.39–7.72, Archives of General Psychiatry, 2006).

That's an odds ratio, not a share of all women. It describes the relative chance of a high symptom score climbing during the transition years, not a prediction for any one woman.

A related line of research looks at PMS and PMDD, conditions tied to the two weeks before a period rather than perimenopause itself.

PMDD affects about 1.6% of women and girls in community studies confirmed with daily tracking, and 3.2% across all studies with a confirmed diagnosis (Reilly et al., 2024, pubmed.ncbi.nlm.nih.gov/38199397). See how common PMDD is for the full breakdown.

A history of either condition appears linked to a higher risk of depression at other hormonal turning points. Neither number tells you whether your own low days are hormonal, situational or both, and that distinction matters more than the exact percentage.

A few study designs show up again and again in perimenopause depression research. Here's what each found, with its sample size and method, so any number can be traced back to its source:

These studies ask different questions. Some track perimenopause directly, others ask whether PMS or PMDD history predicts depression at other hormonal turning points. Together, they describe a pattern of increased vulnerability during hormonal change, without settling on one universal rate. That gap, between what's confirmed and what's provisional, matters most when you're comparing one headline number to another.

None of the studies here compare countries directly, so it's hard to say how these numbers shift outside the populations studied. Most of the strongest data comes from US-based cohorts.

The Harvard Study of Moods and Cycles enrolled women ages 36 to 45. The 8-year cohort followed premenopausal women into their perimenopausal years. Both focus on the years leading up to and through the transition, not later in life.

Age seems to matter less as a fixed cutoff than as a stage. Perimenopause itself isn't a single point in time, it's a multi-year transition, and a woman's higher-risk window may open earlier or later depending on when her own transition starts.

If you're outside the US, or younger or older than the women in these cohorts, treat these numbers as a starting point rather than a forecast for your own years.

A few things explain the spread in perimenopause depression statistics:

• Different measures: symptom scales, clinical diagnosis and self-report all count different things as depression.
• Different populations: some studies exclude anyone with a depression history, others include everyone.
• Inconsistent diagnosis of related conditions: fewer than half the studies on PMDD and depression used the daily prospective ratings needed for a confirmed PMDD diagnosis, so some of those numbers likely mix confirmed and unconfirmed cases.
• Research still catching up: some reviews in this field are still protocols, with the main results not yet published.

None of this means the numbers are wrong. Each one answers a narrower question than how many women get depression in perimenopause, and it's worth checking what was actually measured before comparing two figures.

These numbers describe groups, not you. A fourfold rise in the odds of a high symptom score, or a doubled risk of postpartum depression after PMS, says something about patterns across thousands of women, not what your own perimenopause will look like.

That's true even if the pattern you're noticing started years before any missed period. Hormonal history doesn't erase what's going on in your life right now, a demanding job, a hard relationship, grief. It sits alongside it.

If you've had PMS, PMDD or depression before, mention that history as you approach perimenopause. PMS, explained and PMDD, explained cover how each is diagnosed, which can help you describe your own pattern more precisely.

A few things worth doing if you're noticing changes:

1. Write down your mood most days for a cycle or two, not just in the days before your period.
2. Note whether low days cluster around your period or show up throughout the month.
3. Bring that pattern to a doctor rather than trying to sort it out alone.

If you're still having periods and want to see whether your low days cluster in the two weeks before one, Niyora is a PMS and PMDD support app. It gives you an estimated PMS window and a place to write down how you're feeling by day, so you can bring a clearer pattern to that conversation.

For a wider look at this research, see PMS and PMDD research, summarised.