#601: Gallstones & Gallbladder Conditions: Impact of Diet – Angela Madden, PhD RD

This episode examines what we actually know (and importantly, what we do not know) about diet in relation to gallstones and gallbladder conditions. Much of the public-facing guidance around gallstones focuses on "avoiding fatty foods", yet Dr. Angela Madden explains that this long-standing practice sits on surprisingly weak direct evidence, particularly when judged against the standards typically expected for clinical dietary recommendations.

A central theme is the need to separate two distinct questions: dietary factors that influence the risk of developing gallstones (prevention), versus dietary strategies intended to reduce symptoms or complications once gallstones exist (management). While the prevention literature suggests plausible, consistent associations with overall diet quality and lifestyle factors, the specific question of prescribing a low-fat diet to manage symptomatic gallstones lacks robust randomized trial evidence.

Dr Angela Madden is a clinical researcher in nutrition and dietetics at the University of Hertfordshire, where she established and led the nutrition and dietetics subject group and now focuses her research on improving nutritional assessment, dietary interventions, and patient-centred outcomes in clinical and public health settings.

Timestamps

[02:09] Discussion with Dr. Angela Madden begins
[06:53] Understanding the gallbladder
[08:08] Gallbladder disorders and their prevalence
[13:42] Risk factors and pathophysiology
[22:15] Dietary factors and gallstone formation
[27:20] Exploring dietary fat and gallstones
[34:09] Broader dietary considerations
[45:44] Practical dietary recommendations

Related Resources

Go to episode page
Join the Sigma email newsletter for free
Subscribe to Sigma Nutrition Premium
Enroll in the next cohort of our Applied Nutrition Literacy course
Dr. Madden's univeristy page
Cochrane Review: Madden et al., 2024 – Modified dietary fat intake for treatment of gallstone disease in people of any age
Related episode: 513: Kidney Stones & Diet – Deepa Kariyawasam, RD

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(640)

#617: What Does Effective Athlete Support Look Like in Practice? – Gemma McGuinness

Effective athlete support requires more than delivering technically correct nutrition advice. It depends on understanding the athlete's wider environment, anticipating the pressures that disrupt good ...

25 Elo 46min

Fiber: Independent Benefits or Just a Proxy for Healthy Foods?

This episode answers one of the questions raised in the most recent Q&A episode on Sigma Nutrition Premium. The full episode includes the following questions: Fiber: Independent effect or proxy for ...

18 Elo 21min

#616: More Testing, Better Health? Harms of Overdiagnosis & Overtreatment - Austin Baraki, MD

Medical screening is often framed as an uncomplicated good: if disease is found earlier, treatment can begin earlier and outcomes should improve. This episode examines why that reasoning is incomplete...

11 Elo 1h 15min

#615: Why Processing Doesn't Determine the Healthfulness of Plant-Based Diets – Alysha Thompson, PhD

What does the evidence actually show when we look at plant-based dietary patterns through the lens of food processing? And does classifying foods as "ultra-processed" meaningfully change how we interp...

4 Elo 56min

#614: The Human Skills of Nutrition Coaching – Krista Scott-Dixon, PhD

In nutrition and health coaching, one of the central challenges is understanding how people actually change, particularly when life is complex, motivation fluctuates, and behaviour is shaped by emotio...

21 Heinä 56min

#613: Supplement Safety & Medication Interactions – Giulia Guerrini, MPharm

Supplement safety is often discussed in very general terms, but in practice the risks depend heavily on the individual. A supplement that is reasonable for one person may be inappropriate for another ...

14 Heinä 57min

#612: Does Sweet Taste Exposure Actually Develop Preference? – Prof. Katherine Appleton

A common idea is that repeated exposure to sweet taste strengthens our preference for sweetness, which then drives greater intake of sweet foods and drinks. This idea is often used in arguments about ...

7 Heinä 38min

#611: Electrolyte Mythology: Wellness Marketing vs. Evidence - Zoë Rom & Kylee Van Horn

Electrolytes have become one of the most heavily marketed areas of modern sports nutrition and wellness. What was once a relatively specific tool for certain endurance athletes has increasingly been r...

30 Kesä 55min