Perimenopause and menopause change a lot at once: hormones, sleep, mood, and how your body carries weight. If you've searched for how long this stage lasts, what the symptoms are, or why your weight feels different this year than it did five years ago, you're not alone. Two things the Prolon 5-Day Fasting Mimicking Diet (FMD) can help with during this stage are menopausal weight gain and muscle protection.
Perimenopause is the transition leading up to menopause
Perimenopause often starts in your 40s, when hormone levels begin to fluctuate. Common symptoms include irregular periods, hot flashes, sleep disruption, mood changes, and shifts in weight and body composition. Menopause itself is marked by 12 consecutive months without a period.
Symptoms vary widely from person to person, in both which ones show up and how long they last. Hot flashes are among the longest-lasting symptoms; SWAN data put the median duration at around 7 years (Avis et al., JAMA Internal Medicine, 2015). One of this study's authors reported grant support from Cephalon/Teva, consulting for Noven, and serving on an advisory board for Merck.
There's no single symptom checklist that applies to everyone, and no single fix for the whole list. If a specific symptom is the one bothering you most, your healthcare practitioner is still the right first stop.
Why does weight tend to settle differently during this stage?
Weight changes during perimenopause and menopause aren't only about how much you eat. During the menopause transition, the rate of fat gain doubles, and lean mass, which had been rising, starts to decline, a shift that continues until about two years after the final period (Greendale et al., JCI Insight, 2019).
The fat worth naming specifically is visceral fat: the kind stored around your organs, rather than just under your skin.
Can fasting help with weight gain during menopause?
The Prolon 5-Day FMD supports fat-focused weight loss while helping protect lean muscle, and it targets visceral fat rather than promising general weight loss. That specificity matters more here than it would in a general weight piece: targeting visceral fat is a different goal from chasing a lower number on the scale, and the protocol runs in cycles rather than as an ongoing daily change.
Does the Fasting Mimicking Diet protect muscle mass during menopause?
The Fasting Mimicking Diet targets fat, not muscle, which matters at a stage of life when muscle mass is already declining. The Fasting Mimicking Diet isn't a muscle-building product.
What about menopause symptoms more generally?
The Fasting Mimicking Diet may support relief from menopausal symptoms, can help with energy and mental clarity, and is designed to support graceful aging. That is general support, not a symptom-by-symptom promise, and it isn't a substitute for anything your healthcare practitioner has recommended. None of this is a treatment for menopause itself, and questions about hormones belong with your healthcare practitioner.
What does a cycle of the Prolon 5-Day FMD look like if you're starting during perimenopause or menopause?
The standard protocol is three consecutive monthly cycles to start, then three to four cycles a year for maintenance.
Before you begin, talk to your healthcare practitioner. Anyone with a pre-existing condition or taking any prescription medications should consult with a healthcare practitioner before fasting. Our FAQ on health conditions and Prolon lists when you should not fast.
Inside each day's box is a set schedule: plant-based soups, bars, snacks, and teas, in specific daily quantities, not a list of foods you assemble yourself. Perimenopause and menopause already mean adjusting to a body that's behaving differently than it used to; a fixed, five-day protocol removes a layer of daily decision-making rather than adding one.
The Prolon 5-Day FMD provides every meal for all five days, portioned and planned.
Related reading: Fasting Mimicking Diet: How It Offers Support for Menopausal Health and Why I Recommend It To My Patients
