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The Doctor's Kitchen Podcast

#337 Why Mould Harms Your Health and How to Protect Yourself | Dr Peter Cook PhD

The Doctor's Kitchen Podcast

Dr Rupy Aujla

Mindset, Healthy Eating, Nutrition, Health And Wellbeing, Health & Fitness, Dr Rupy, Nutritional Medicine, Wellness, Healthy Recipes, Improving Health, Doctor's Kitchen, Health Goals, Medicine, Mental Wellbeing, 868329, Lifestyle, Food And Lifestyle

4.72.7K Ratings

🗓️ 25 February 2026

⏱️ 52 minutes

🧾️ Download transcript

Summary

I talk a lot about what we eat for our health. But what about the air we breathe at home?


If you or your kids have asthma, constant sniffles, a lingering cough, sinus issues, or you’ve noticed damp patches and that musty smell, this episode could change how you think about your home.

As a new dad, I'm personally really interested in how our home environment shapes early immune development. This conversation made me think differently about ventilation, condensation and what really matters.


My guest is Dr Peter Cook, a Wellcome Trust Sir Henry Dale Fellow at the MRC Centre for Medical Mycology at the University of Exeter. His research looks at how airborne fungal spores interact with the immune system and drive allergic and asthmatic disease, an area that has been surprisingly neglected.


In this episode, we go into:

  • What mould actually is and when it becomes a problem
  • What is a safe level of mould?
  • How mould exposure can trigger asthma and allergic disease
  • Who’s most at risk
  • Whether mould testing kits are worth your money
  • If dehumidifiers and air purifiers actually work
  • Practical steps you can take this week to reduce your exposure and protect your health


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Transcript

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0:00.0

Hi, I'm Dr. Rupi. I'm a medical doctor and nutritionist. And when I suffered a heart condition

0:07.4

years ago, I was able to reverse it with diet and lifestyle. This opened up my eyes to the world

0:14.0

of food as medicine to improve our health. On this podcast, I discuss ways in which you can use nutrition and lifestyle to improve your own well-being every day.

0:24.4

I speak with expert guests and we lean into the science, but whilst making it as practical and as easy as possible so you can take steps to change your life today.

0:35.0

Welcome to the Doctor's Kitchen podcast. We talk a lot about what to eat for our health,

0:46.6

but what about the air we breathe at home? What is something growing silently behind your walls,

0:57.3

under your floors, or even in your mattress,

1:02.3

could be affecting your energy, your brain, and even your immune system?

1:09.1

Today, Dr. Peter Cook, a leading expert at the MRC Center for Medical Micology,

1:12.9

is going to guide us through what mold actually is,

1:18.9

while we're seeing more of it in modern homes and what a safe level of mold could be.

1:26.3

Personally, I'm super interested in how home environments impact our health and the development of babies like my little boy.

1:28.9

Together, we'll explore the practical steps you can take to prevent mold, reduce exposure

1:35.9

and make your home a genuinely healthier place to live, including whether there's any evidence for dehumidifiers and air purifiers in the home.

1:54.8

To keep our podcast completely free for you, our lovely listener, we're going to hear a quick word from

2:00.3

sponsors who make that

2:01.5

possible.

2:08.3

Dr. Peter Cook, Mold Expert Extraordinaire. We're going to be talking about something I really do

2:15.4

not know much about, and that is mold. I wasn't taught that much

2:18.3

about it at medical school. You know, we're talking a little bit earlier about how this is sort

2:22.7

of brushed over. I think about mold in the context of immunosuppressed patients. But let's bring

2:30.6

it back to basics for our audience. Sure. What is mold?

...

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