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Her Next Chapter

The latest science for the best years ahead.

Metabolism / Hormones / Peptides / Longevity

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Living well, explained

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Thoughtful, research-backed stories on the changes of your 30s and 40s — and what really helps.

Hormones & Midlife

Think You're Too Young for Perimenopause? Here's What You Should Know

You're 38, your sleep is suddenly unpredictable, and your periods aren't quite what they used to be. Could hormones be changing earlier than you expected? Here's what doctors want women to understand about the years leading up to menopause.

7 min read

A woman doing a dumbbell squat in a sunlit home workout roomFree guide

Free guide · For women 35+

The 8-Week Plan to Lose Body Fat After 35 — And Keep It Off

A science-backed approach to sustainable fat loss for women over 35.

  • Build a leaner, stronger, more defined body.
  • Break the cycle of losing and regaining weight.
  • Feel strong, confident, and at home in your body.
  • Learn an adaptable system you can use toward a longer-term goal.

You'll also receive The Next Chapter Letter. Unsubscribe anytime. Individual results vary. This guide is educational and not medical advice.

From the research desk

Latest Research

New studies, clinical trials, and regulatory decisions, read closely: what was found, who was studied, and what it could mean for you.

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Evergreen guides

The Science Explained

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The background behind the headlines: how the body works, what the evidence says, and how to use it.

Energy & Recovery

Still Sore Days After a Workout? Your Age Might Not Be the Reason.

7 min read

Metabolism / Hormones / Peptides / Longevity

Women's Health & Longevity

Six desks, one goal: the latest science for the best years ahead.

Why we're here

Women in their 30s and 40s are handed a lot of hype and very little nuance. Her Next Chapter reads the research, names the uncertainty, and helps you walk into your doctor's office with better questions.

About Her Next Chapter

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The Next Chapter Letter

New discoveries. Clear explanations. Smarter conversations about your health.

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  • 01

    New research, decoded

    What a study found, who was in it, and how much weight it deserves.

  • 02

    One clear explainer

    A topic you've wondered about, explained without hype or jargon.

  • 03

    Better questions

    Context you can bring to your next conversation with your clinician.

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  • We link to the source

    Research stories cite and link the original study, trial, or regulatory decision.

  • We label the evidence

    We say clearly whether a finding comes from human trials, observational studies, animal studies, or the lab.

  • We name the limits

    Research stories explain who was studied, what was measured, and what remains uncertain.