Welcome to the Rythma Blog

Welcome to the Rythma blog. Perimenopause is one of the most confusing and least-explained stages of a woman's life — full of new symptoms, irregular cycles, and questions that are hard to get straight answers to. This blog exists to fix that: to give clear, well-sourced, genuinely useful explanations of what your body is doing and what you can do about it.
We write for women in their 40s and 50s who feel like the rules suddenly changed — and for anyone trying to understand perimenopause well enough to plan around it.
What we cover
- Symptoms and patterns — hot flashes, sleep, mood, brain fog, irregular cycles: what they are, why they happen, and when they tend to hit.
- Tracking in midlife — how to make sense of an unpredictable cycle, and why standard period apps fall short once perimenopause begins.
- Daily life — managing work, relationships, and energy around your hard days instead of being blindsided by them.
Why this blog exists
Most perimenopause information sits at two unhelpful extremes: clinical pages that hedge everything, or wellness content with no sources behind it. We aim for the middle — plain-language explanations backed by primary and clinical sources, paired with the practical question that matters most: how do I see my own pattern?
That last part is what Rythma was built for. The app learns your personal symptom patterns and predicts difficult days before they arrive, so you can plan your life around perimenopause instead of the other way around.
New posts publish a few times a week. Expect perimenopause symptoms and patterns first.
Keep reading
Perimenopause Supplements: What the Evidence Says
Black cohosh, soy isoflavones, red clover, evening primrose oil and more — what NICE, The Menopause Society, NCCIH and ACOG actually conclude.
hormonesEstrogen & Progesterone in Perimenopause, Explained
What estrogen and progesterone actually do in perimenopause, why they swing erratically instead of just declining, and how that drives your symptoms.
hormonesWhat Is HRT? A Plain-English Guide
HRT replaces the estrogen your body makes less of in menopause. A clear guide to types, delivery methods, benefits, and risks from NICE, NHS, ACOG, and more.
symptomsPerimenopause and Joint Pain: The Connection
Why joints ache in perimenopause: an estrogen link, a 71% prevalence figure, what the WHI estrogen trial found, and how to tell it apart from arthritis.