I consider that feeling our greatest comes after we study to hearken to our our bodies—and one factor I’ve personally noticed over time is that I’m my most vibrant after I cycle out and in of intermittent fasting. Once I’m in step with a rhythm that works for me, I’ve regular vitality, higher digestion, and I discover it simpler to keep up my weight with out stressing over each chew.
However right here’s the important thing: I’m not inflexible a few fasting schedule. If I get up actually hungry, I eat. If it’s the week earlier than my interval, I skip fasting totally. Intermittent fasting, for me, is about listening to my physique and tapping into that instinct—not “forcing” something.
My present method is generally impressed by Dr. Mindy Pelz’s e-book, Quick Like a Lady. Her analysis is all about how ladies can quick in a manner that helps our hormones, reasonably than working towards them. I loosely sync my fasting habits with my menstrual cycle: throughout many of the month, I often comply with a 16:8 quick (an 8-hour consuming window, so between 10 a.m. and 6 p.m., for instance). Through the luteal section (the week earlier than my interval), I don’t quick in any respect. Throughout my follicular section, I prefer to experiment with a barely longer quick, when my vitality naturally feels greater.
This versatile method has been such a game-changer for me. But it surely’s not simply anecdotal expertise—there’s actual science behind why intermittent fasting can help ladies’s well being, enhance longevity, cut back irritation, and produce a complete host of different well being advantages.
To assist us dig into the analysis, Lauren Zielinski, MSN, CNM, an authorized nurse, midwife, and girls’s well being professional shares sensible recommendation to method intermittent fasting in a grounded, supportive manner.
Lauren Zielinski, MSN, CNM
Lauren Zielinski is an authorized nurse-midwife with over 11 years of expertise in ladies’s well being and start. She studied medication at The College of Colorado-Denver with a give attention to neighborhood well being and start heart work.
The Science Behind Intermittent Fasting
“There’s an abundance of analysis behind intermittent fasting,” Lauren shares. “And whereas it can result in weight reduction, the advantages run a lot deeper. Analysis has proven its potential to “clear cells,” enhance longevity, and reduce the chance of widespread ailments like diabetes and coronary heart illness. Intermittent fasting retains your DNA and cells wholesome, and may decelerate the getting older course of. I’d argue that it’s the closest factor to the fountain of youth.”
Lauren explains that intermittent fasting isn’t a fad—it’s been studied at main analysis establishments together with USC’s Longevity Institute and Harvard College. Research hyperlink it to improved metabolic well being, lowered irritation, higher mind perform, and elevated longevity.
How Fasting Truly Works within the Physique
On a standard day, your physique makes use of glucose from meals for vitality. However whenever you quick, it shifts from burning sugar to burning saved fats—a course of known as metabolic switching (a time period coined by Johns Hopkins neuroscientist Mark Mattson, Ph.D.).
This change doesn’t simply assist with fats loss. It triggers a cascade of mobile advantages. As fasting continues, glycogen shops deplete, and your physique enters ketogenesis—releasing ketones into the bloodstream. These ketones:
- Improve the physique’s defenses towards oxidative stress
- Assist take away or restore broken cells
- Enhance blood sugar regulation
- Enhance stress resistance and cut back irritation
Much more fascinating: ketones stimulate the discharge of BDNF (brain-derived neurotrophic issue), a molecule that strengthens neurons and neural connections, supporting reminiscence and cognitive well being.
“Consider fasting as a mini ‘spring cleansing’ on your physique,” Lauren says. “You’re giving your system a break from fixed digestion, which permits your cells to restore and regenerate.”
The Distinctive Concerns of Intermittent Fasting for Girls
Whereas intermittent fasting can profit almost everybody, ladies’s hormones make it particularly vital to method it with flexibility. Lauren emphasizes: “Girls will not be simply smaller males. Our hormonal fluctuations all through the month imply that fasting can really feel wonderful at sure occasions and depleting at others.”
Right here’s a simplified information based mostly on what each analysis and many ladies (together with myself) have skilled:
- Follicular section (Day 1–14): Estrogen is rising, vitality is greater. That is typically the most effective time to attempt longer fasts (14–16 hours).
- Ovulation: Proceed average fasting if it feels good, however hearken to your physique.
- Luteal section (the week earlier than your interval): Cortisol is extra delicate, and your physique may have extra nourishment. This can be a nice time to ease off fasting or skip it altogether.
- Menstrual section: Many ladies really feel higher with light fasting or none in any respect throughout their interval.
This cyclical method is what’s labored finest for me. It’s additionally what Mindy Pelz and plenty of hormone consultants suggest: honor your cycle, reasonably than pushing by it.
The Lengthy-Time period Advantages of Intermittent Fasting
A 2019 New England Journal of Drugs evaluate of fasting analysis discovered important, wide-ranging advantages, together with:
- Cognitive perform: Improved reminiscence and psychological readability
- Coronary heart well being: Higher blood strain, ldl cholesterol, and resting coronary heart charge
- Metabolic well being: Improved insulin sensitivity and lowered danger of Sort 2 diabetes
- Bodily efficiency: Enhanced endurance and lean muscle preservation
- Longevity: Improved mobile restore mechanisms which will gradual getting older
For me, these advantages present up as sustained vitality, higher digestion, and feeling extra in tune with my physique’s cues.
How one can Begin Intermittent Fasting Gently
Should you’d like to offer fasting a attempt, right here’s Lauren’s aware method:
- Start with 12 hours between dinner and breakfast.
- After per week or two, lengthen to 14–16 hours if it feels good.
- Keep hydrated—water, black espresso, and natural teas are your finest buddies.
- Concentrate on nutrient-dense meals throughout your consuming window to help hormones and blood sugar steadiness.
- Give your physique 3–4 weeks to adapt. “It’s regular to really feel drained or irritable at first,” Lauren says. “That often passes as your metabolism adjusts.”
And maybe most significantly: it doesn’t must be all or nothing. Should you get up hungry, eat. In case your physique wants extra gas throughout sure phases of your cycle, pay attention.
When to Keep away from Intermittent Fasting
Whereas intermittent fasting might be useful, it’s not proper for everybody. Lauren advises towards fasting in the event you:
- Are underneath 18
- Are pregnant or breastfeeding
- Have a historical past of consuming issues
- Have diabetes or different blood sugar issues
All the time verify with a healthcare supplier earlier than making main adjustments to your consuming routine—particularly when you have underlying situations.
Meals Freedom, Not Restriction
For me, intermittent fasting isn’t about restriction. It’s about discovering a rhythm that helps my vitality, temper, and hormones—and being versatile when my physique wants one thing totally different.
Lauren sums it up completely:
“When accomplished thoughtfully, intermittent fasting is usually a highly effective device to help ladies’s well being, however the bottom line is flexibility. Our hormones are dynamic, and our method to fasting needs to be, too.”
References & Sources:
- Pelz, M. Quick Like a Lady (2022)
- Mattson MP et al. “Intermittent Fasting and Human Metabolic Well being.” New England Journal of Drugs, 2019.
- Nationwide Institute of Well being. “Ketogenesis and Mobile Stress Response.”
- USC Longevity Institute; Harvard Medical College research on metabolic switching.
This put up was final up to date on October 24, 2025, to incorporate new insights.