Something shifts around 40 — and it is not subtle. You feel more irritable than usual. Your periods are heavier, closer together, or showing up when you least expect them. Sleep is harder to come by. And when you finally sit in front of your doctor, you hear the same thing: "Your labs look normal."
For millions of women, this moment marks the quiet beginning of perimenopause — a hormonal transition that starts years before menopause and affects nearly every system in the body. But because the medical system often overlooks it, women are left questioning their own instincts.
In this episode of The 40-Year-Old Woman, Dr. Mindy Leroy sits down with Becca Meek, a board-certified women's health nurse practitioner with over 20 years of experience, to break down what is actually happening in a woman's body during her early 40s, why conventional care so often misses it, and what you can do right now to start feeling like yourself again.
One of the most important — and most overlooked — aspects of perimenopause is that progesterone is the first hormone to decline. This happens well before estrogen drops and long before periods stop entirely.
When progesterone levels fall, the ratio between progesterone and estrogen shifts. Estrogen can become more dominant and more erratic, which triggers a cascade of symptoms that are often misdiagnosed. Women may experience heightened anxiety because progesterone activates calming GABA receptors in the brain. Without adequate progesterone, that natural sense of calm diminishes.
Dr. Mindy describes what she commonly sees in her clinic: increased PMS severity, bloating (since progesterone acts as a natural diuretic), irritability, mood swings, and what she calls "the peekaboo period" — irregular bleeding that starts, stops, and restarts unpredictably. Heavy periods can lead to iron deficiency anemia, compounding fatigue. Cycles that once ran like clockwork at 28 days may shorten to 25 or 24 days, sometimes with mid-cycle spotting.
Becca reinforces that stress makes all of this worse. When the body shifts into a chronic fight-or-flight state — fueled by caffeine, demanding schedules, and years of pushing through without rest — cortisol production ramps up at the expense of the hormones that keep women feeling balanced. She notes that many patients present thinking they have ADHD, when the real issue is hormonal imbalance intensified during the luteal phase.
Both Dr. Mindy and Becca emphasize that when and how hormone labs are drawn makes all the difference. A blood draw taken at the wrong point in the menstrual cycle can paint a misleading picture — leading to treatments that make things worse, not better.
The ideal window for most perimenopausal women is the luteal phase, roughly days 16 through 21 of the cycle. This is when progesterone should peak and when the ratio between estrogen and progesterone reveals the most about what is actually happening.
Dr. Mindy shares a personal story: early in her journey, a provider drew her labs at the wrong time, saw low estrogen, and prescribed estrogen replacement. The result was estrogen dominance — weight gain, severe irritability, extreme breast tenderness. The opposite of what she needed. It was not until Becca reviewed her labs and started her on progesterone that she finally felt balanced.
This is not a rare scenario. Both providers have seen patients arrive from other clinics with poorly timed labs and inappropriate prescriptions. They stress that labs are a guide, not the full story. Receptor activity, absorption, genetics, and intracellular processes all influence how hormones function — and none of that shows up on a standard blood panel.
For women seeking hormone care, not all providers are created equal. Dr. Mindy and Becca lay out clear red flags to watch for when evaluating a hormone provider:
A provider who only treats lab values without listening to symptoms. A provider who only treats symptoms without running labs. A provider who ignores the thyroid, adrenals, and gut health — treating hormones in isolation rather than as part of an interconnected system. A provider who only offers one delivery method (pellets only, or creams only) rather than individualizing treatment. And critically, a provider who does not prescribe testosterone to women.
Testosterone, often called "the missing hormone," plays a vital role in energy, metabolism, menstrual comfort, and libido. Both practitioners have seen significant improvements in women during perimenopause when testosterone is appropriately prescribed.
On the green-flag side: look for a provider who takes a whole-body approach, checks labs at the correct time in your cycle, explains your results in language you understand, offers multiple forms of hormone therapy, and continues their own education. As Becca puts it, every woman is unique, and a quality provider treats each patient as an individual — not a template.
If this episode resonates with you, Dr. Mindy and Becca offer several actionable steps you can take today:
Start tracking your symptoms. Keep a daily journal of your mood, energy, sleep, cravings, headaches, and menstrual patterns. This information is invaluable for any future provider and helps you identify patterns you may not notice otherwise.
Educate yourself. Resources like Dr. Sarah Gottfried's The Hormone Cure and Dr. Mary Claire Haver's work offer accessible education on hormonal health. The more you understand about your own body, the more effectively you can advocate for yourself.
Find a specialist — and do not settle. It may take two or three providers before you find the right fit. That is normal. Interview them. Ask how they approach lab timing, whether they prescribe testosterone, and how they handle individualized care.
Understand that perimenopause is not a disease. Your body is not broken. It is transitioning. And with the right support, this decade can be navigated with clarity and confidence rather than confusion and frustration.
Becca frames it powerfully: perimenopause is the moment your body reveals where you have not been taking care of yourself. It is a call to rebalance — to prioritize sleep, nutrition, movement, and recovery. Women who address these foundations during perimenopause tend to move through menopause far more smoothly than those who ignore the signals.
If you are tired of being told you are "fine" when you know something has changed, it may be time for a different approach. Schedule a consultation at Harmony HealthSpan and let Dr. Mindy's team help you understand what your body is telling you — and build a plan to support you through every stage of this transition.