From capsules and powders to yoghurts that promise to ‘feed your microbiome’, pre-, pro- and postbiotics are everywhere right now. But behind the buzzwords, there’s real science — and for women in midlife, it matters more than ever.
As hormones fluctuate, digestion can slow and bloating or sensitivities start to creep in. Gut health plays a key role in everything from oestrogen balance to mood and immunity, so supporting it can make a real difference.
Here, we explain how pre-, pro- and postbiotics support gut health and share expert tips on choosing (and using) them wisely.
Prebiotics, probiotics, and postbiotics: what’s the difference?
The conversation around gut health can be confusing, to say the least. To make things easier, let’s think of the gut as a thriving little ecosystem — a garden that needs the right care to flourish.
“When it comes to pre-, pro-, and postbiotics, each plays a slightly different but important role,” Gail Madalena, Nutritional Therapist at Wild Nutrition explains. “All three of them work synergistically to maintain a healthy gut ecosystem.”
Here’s a simple way to distinguish between the three:
Prebiotics: the fertiliser
Non-digestible fibres that feed your good gut bacteria (probiotics), helping them grow strong and balanced.
Find them in: garlic, onions, leeks, oats, bananas, flaxseed, and wholegrains.
Probiotics: the plants
Live, good bacteria that help keep the gut microbiome diverse and resilient.
Find them in: live yoghurt, kefir, sauerkraut, miso, kimchi, and tempeh.
Postbiotics: the nutrients left behind
Bioactive compounds made when the friendly bacteria in your gut (probiotics) digest and break down fibres (prebiotics). These include short-chain fatty acids, peptides, and vitamins that help keep your gut lining strong and your immune system in balance.
Find them in: fermented foods like yoghurt and kefir, as well as foods that encourage postbiotic production such as leafy greens, green bananas, cooled rice, turmeric and ginger.
Together, they form a simple chain reaction: prebiotics feed probiotics, which then create postbiotics — the nutrients that help the gut feel its best. A recent paper found that each has a part to play in maintaining our gut microbiome, and in turn, our overall health and wellbeing.
Why gut health matters in midlife
As hormones begin to shift during perimenopause, menopause and beyond, the gut feels it too.
“During midlife, women experience significant hormonal changes that can influence the balance and diversity of the gut microbiome,” explains Gail. “These changes may affect digestion, metabolism, mood, and immune function.”
Falling oestrogen can slow digestion and alter the mix of bacteria in the gut, which is why bloating, constipation or new food sensitivities can creep in. The gut also has a direct line to the brain via its own nervous system — the enteric nervous system — sometimes called the “second brain.”
“When the conversation between the gut and the brain is healthy, women often notice steadier energy and clearer thinking,” says Jo Lothian, Nutrigenomics Practitioner at The Happy Reset. “The microbiome also helps recycle and clear oestrogen, so keeping it balanced can ease symptoms such as bloating, hot flushes and sleep disturbance.”
In short, looking after our gut is one of the most effective ways to support wellbeing in midlife. And beyond incorporating gut-loving foods into our diet each day, a targeted supplement can give our microbiome a little extra support — especially during times of hormonal change or digestive disruption.
Do you need a supplement?
Gut health is rarely one-size-fits-all — and what works wonders for one person might do little for another. Still, there are a few signs your microbiome could use some extra care.
“If you’re experiencing persistent bloating, irregular bowel movements or ongoing digestive discomfort, this can signal an imbalance in the gut microbiota,” Gail says. “This is when beneficial bacteria are outnumbered by less favourable strains, a state known as dysbiosis.”
If this sounds familiar, the right supplement could help restore harmony. Prebiotics are ideal if your diet is low in fibre or digestion feels sluggish — they gently feed your existing good bacteria and support regularity.
Probiotics are ideal to take after an illness or a stressful period, when the gut needs repopulating.
“Women who’ve had several rounds of antibiotics, high stress, or a diet low in plants often respond well to introducing both fermented foods and a targeted supplement to restore diversity,” Jo affirms.
And if your gut tends to be sensitive, postbiotics may be the gentlest option — supporting gut barrier strength and calm without live bacteria.
How to choose (and use) them wisely
When it comes to choosing a gut health supplement, a few simple checks go a long way.
“A ‘best before’ or ‘use by’ date shows that the live cultures are guaranteed to be active until the end of shelf life, not just at manufacture,” Jo points out.
Keep an eye on the biotic’s bacterial strains too, which should be named in full. It’s helpful to do a quick search of the strain online, so you know that it’s been scientifically verified.
“For women in midlife, a formula tailored to this stage of life can be especially beneficial,” Gail adds. “Look for biotics that help support oestrogen metabolism, gut–brain communication, and inflammation balance.”
Storage matters, too — some live probiotics need refrigeration, while postbiotics and many prebiotics are more stable and travel-friendly. Start slowly, especially if you’re prone to bloating, and give your gut a few weeks to adjust.
So, there’s no single biotic that is categorically better than another. But the right supplement can help your microbiome — and you — feel more resilient, energised and at ease from the inside out.
The best gut-loving supplements (as approved by Liz)
Ancient + Brave True Biome
A triple-action gut-care powder that nourishes, repairs and protects your microbiome. This neutral-tasting blend combines gentle prebiotic fibres, L-glutamine to support gut lining, and a postbiotic to help strengthen your gut barrier.
The Naked Pharmacy Gut Love
Each two-capsule serving provides 19 billion CFU from 19 clinically researched strains, with baobab acting as a gentle prebiotic and slippery elm helping protect the bacteria through digestion for effective gut delivery.
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