Intermittent Fasting in Perimenopause and Menopause: Yes, No, Maybe? It Depends!
- Karin
- May 29
- 2 min read
One of the most frequent questions I am asked is some version of:
"Should I be fasting?"
Social media often frames (intermittent) fasting as the ‘magic ingredient’ or the ‘metabolic switch’ for mid-year weight loss.
So—is it?
The ‘magic ingredient’? Probably not. Support for your metabolism? It can be.
When done well, (intermittent) fasting can be a powerful clinical tool. It can improve insulin sensitivity, help reduce stubborn visceral fat, and support better blood sugar regulation. For many women, it’s a way to hit a 'system reset' and give the digestive system a much-needed break (a 'Gut Spa Day', if you will).
And here is the BUT... It must be managed carefully for the individual woman in her mid-years.
Fasting is a physiological stressor. While that’s normal, those stress hormones (cortisol) interact directly with your sex hormones (like oestrogen). In perimenopause and menopause, your hormones are already all over the place - and the decline of oestrogen means your natural ‘buffer’ for stress is declining, too.
If fasting is poorly timed, it can actually interfere with your progress rather than help it.
If you are considering (intermittent) fasting, here is how to work with the reality of your body right now:
Start with a 'Gentle' Window: Instead of jumping straight into a long fast, try a 12-hour window. This supports glucose control without spiking cortisol too high.
The 'Active' Rule: If you are training, your window must be synchronised with your routine to avoid a cortisol 'spillover.'
Check your 'Buffer': If you’ve had poor sleep or a high-stress week, it is not the time for an aggressive fast.
Prioritise Protein (and watch the carbs!): When you break your fast, ensure
it’s with high-quality protein and healthy fats for a steady blood sugar response.
Hydrate with Unsweetened Fluids: Water, herbal teas, or black coffee/tea are fine—but avoid artificial sweeteners, as they can still trigger an insulin response.
Let’s work with the reality of where your body is right now, not where it was ten years ago.
Ready to find a protocol that fits you and your situation?
Give me a ring to discuss how we can incorporate this for you.
