Answers for the decade your body stops behaving the way it used to
Most women's health writing is organised by symptom, so a woman at 43 with new joint pain, a shorter cycle and 3am waking reads three unconnected articles. Tommy & James organises by life stage instead. Every page names the mechanism, cites the primary research, and says plainly what is normal, what is worth a lab test, and what needs a clinician.
Written by Meredith Kane, a health writer, not a doctor. Every claim traces to a named source, and you can read exactly how we check them
Latest
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Sleep and Energy
Waking at 3am in your luteal phase: the progesterone and cortisol handoff
Waking between 2am and 4am in the second half of your cycle is not random. Progesterone's metabolite allopregnanolone enhances GABA, the brain's primary inhibitory neurotransmitter. When progesterone drops in the…
September 8, 2026 · 6 min read -
Perimenopause
Tinnitus and perimenopause: why ears ring when estrogen drops
Perimenopause and tinnitus overlap in time, but no causal link is established. Estrogen receptors have been found in cochlear tissue, and human studies of menopause and hearing conflict. Tinnitus has…
September 8, 2026 · 6 min read -
Nutrition and Labs
Normal hemoglobin, low ferritin: why heavy periods hide iron deficiency
Yes. Iron depletion runs in stages and hemoglobin falls last. Storage iron goes first, which ferritin measures. Transport iron goes next, which transferrin saturation measures. Only then does hemoglobin drop…
September 8, 2026 · 7 min read -
Cycles and Hormones
Why your cycle gets shorter in your 30s and 40s
A cycle that shortens from 29 days toward 25 is usually the follicular phase contracting, not the luteal phase. As antral follicle counts fall, early-follicular FSH rises sooner, a follicle…
September 8, 2026 · 6 min read
What changes, and when
The reproductive transition is staged clinically, not guessed at. The STRAW+10 staging system is what gynecologists use to place a woman on the timeline. Here is the same map in plain words.
| Stage | Typical age | What defines it | Commonly missed |
|---|---|---|---|
| Late reproductive | Late 30s to early 40s | Cycles still regular but shortening; egg reserve falling | A cycle moving from 28 to 25 days is the first real signal |
| Early perimenopause | Mid 40s | Cycle length varies by 7 days or more between consecutive cycles | Heavier bleeding and worse PMS start here, not at menopause |
| Late perimenopause | Late 40s | A gap of 60 days or more between periods | Hot flashes often begin in this window, alongside sleep loss |
| Menopause | Around 51 to 52 | 12 consecutive months with no period | It is a single point in time, diagnosed only in hindsight |
| Postmenopause | 52 onward | Everything after that 12-month mark | Bone and cardiovascular risk change fastest in the first years |
Questions readers ask
What age does perimenopause usually start?
Most women enter perimenopause in their mid-40s, though it can begin in the late 30s. The National Institute on Aging places menopause itself most often between 45 and 55. Perimenopause is the transition leading up to it, and it commonly runs for several years.
Can a blood test tell me if I am in perimenopause?
Usually not on its own. FSH and estradiol swing widely from day to day during the transition, so a single normal result does not rule perimenopause out. The American College of Obstetricians and Gynecologists treats the pattern of your cycles and symptoms as the primary evidence.
Is a shorter menstrual cycle a sign of perimenopause?
Often yes, and it is usually the earliest one. Cycles shortening from around 28 days to 25 or 24 reflects a shorter follicular phase as ovarian reserve falls. Under the STRAW+10 staging system, persistent variation of seven days or more marks early perimenopause.
Why do symptoms like joint pain and tinnitus get dismissed?
Because they are not on the short public list of hot flashes and night sweats. Estrogen receptors sit in joint tissue, the inner ear, skin and the gut lining, so falling estrogen produces symptoms far outside the reproductive system. They are real, and they are poorly covered.
Does this site sell supplements or hormone therapy?
No. Tommy & James sells nothing, takes no vendor sponsorship, and is not affiliated with any clinic, laboratory, telehealth service or supplement brand. If a page ever carries an affiliate link, a visible disclosure block sits at the top of that page.
Is anything here medical advice?
No. Everything on this site is general information for healthy adults, written from published research. It cannot account for your history, your medications or your labs. Take the specific questions raised here to a clinician who can.
Who publishes this. Tommy & James is an independent publication written by Meredith Kane. It is not a medical provider and is not affiliated with any clinic, laboratory, supplement brand, telehealth company or government health agency. Nothing here is personal medical advice.
Every factual claim on this site traces to a named primary source, and every page carries the date it was last reviewed. Read how we research, the editorial policy, or the medical disclaimer.