Gut Health, Hormones & Longevity: Why Your Microbiome Shapes How You Age

Did you know your gut plays a critical role in your overall healthspan?

In this episode of the Biohackher Podcast, Azra sits down with Dr Craig Haifer, clinical gastroenterologist, microbiome researcher and one of Australia's leading voices bridging medicine and preventative wellness, to unpack why gut health is the master regulator of ageing, hormones, immunity and inflammation.

From bloating and brain fog to menopause, mood and longevity, this conversation goes far beyond "eat more fibre" — diving into the real science of the gut–brain–hormone axis and what women need to know to age well.

What You'll Learn in This Episode

• Why the gut is the control centre of the body — influencing immunity, hormones, mood, metabolism and ageing

• The underrated estrogen–gut connection and how your microbiome acts like a natural form of hormone therapy

• Why bloating isn't always about food — and how pelvic floor dysfunction and "gut flow" play a major role

• The surprising reason many gut issues begin in adolescence, not adulthood

• Why restrictive diets (including long-term low-FODMAP) can backfire — and how to think about diet like a prescription

• How stress, sleep and the nervous system shape your microbiome more than most supplements

• What centenarians' guts reveal about healthy ageing and longevity microbes

• The truth about probiotics vs prebiotics — and why feeding your own gut ecosystem matters more than chasing trendy strains

• What gut hypnotherapy is, how it works, and why it's backed by clinical trials

• The science behind faecal microbiota transplantation (FMT) — from inflammatory bowel disease to cancer and longevity research

• Why you can't "supplement your way out" of a poor lifestyle — even with cutting-edge microbiome therapies

Key takeaway

Your gut isn't just about digestion — it's a dynamic ecosystem that talks constantly to your brain, hormones and immune system. Supporting it isn't about extremes or detoxes, but about flow, fibre, nervous system regulation and sustainable habits that help you live well longer.

About Dr Craig Haifer