The Essential Guide to Intermittent Fasting for Women by Megan Ramos
Megan Ramos spent years coaching people through therapeutic fasting at The Fasting Method, the clinic she co-founded with Dr Jason Fung, who wrote the foreword here. This book takes that clinical experience and rewrites it for female physiology, which is exactly the part most fasting manuals leave out. She also co-wrote the warmer, more personal Life in the Fasting Lane with Fung and Eve Mayer.
Author: Megan Ramos, clinical educator · Publisher: Greystone Books, 2023 · Length: about 272 pages
What the Essential Guide covers
The central argument is simple: women cannot fast the way men do, because a woman’s hormones respond differently to going without food. From there Ramos lays out fasting protocols designed to fit a busy week, alongside practical guidance on when and what to eat so you stay full and energised rather than depleted.
A good chunk of the book is given over to specific life stages. There are chapters on fasting through fertility struggles, PCOS, perimenopause, and menopause, which is unusual for a mainstream fasting title. Throughout, Ramos keeps returning to cortisol and stress, on the view that a fast which spikes your stress response will work against you. The eating advice sits close to the low-carbohydrate approach she and Fung use in clinic.
Who it’s best for
Women who want fasting mapped to female hormones and to a particular life stage, especially anyone navigating PCOS, perimenopause, or menopause and tired of advice written for 200-pound men.
Key takeaways from the Essential Guide
- Fasting frequency and length should flex with your hormones rather than stay fixed all month.
- Managing stress and cortisol matters as much as the length of the fast itself.
- What you eat in your eating window decides whether the fast helps or backfires.
- Different life stages need different fasting doses, and the book gives each one its own plan.
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Fasting that adapts to your cycle
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How it fits cycle-aware fasting
Ramos organises her advice mostly by life stage. If you are still cycling, the missing layer is the week-by-week rhythm across a single month, where a window that feels easy in your follicular phase often feels punishing in the days before your period. Pair the book’s hormone advice with our complete guide to cycle-synced fasting and our overview of intermittent fasting for women to get both layers. If PCOS or perimenopause is your reason for reading, those guides go deeper on the specifics. For a book built entirely around that week-by-week rhythm, see our review of Fast Like a Girl.
Where it falls short
The recommendations lean on Ramos’s clinical experience and the low-carb-plus-fasting model she and Fung use more than on large randomised trials in women. That does not make them wrong, but it is worth reading with the same healthy scepticism the book itself encourages.
The verdict
One of the few fasting books that treats women as the default reader rather than an afterthought. If you want protocols shaped around your hormones and your stage of life, it earns its place near the top of the list.
This review is part of our roundup of the best intermittent fasting books.
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Skip the guesswork
FastingBestie reads your cycle phase and adjusts your fasting window, meals, and training as your hormones shift, so you always know today’s plan without rebuilding it.