Dr. Ali Herr

speaker

113 appearances 1 recordings 1 series first heard Jun 2026 last heard 24 Jun

Dr. Ali Herr’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jun 2026 with 1.

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The Food Chain · What to eat for a better night's sleep · 24 Jun 2026 podcast

But I think nothing is going to be more powerful, though, than potentially including these in your diet.

But I think if the approach is simply that you're going to drink a glass of tart cherry juice and then the rest of the time you are not going to focus on having a diet that's high in plant biodiversity, that's Mediterranean in style, that's low in saturated fat and immediate release sugars.

that's high in fiber, you're not going to see a significant impact in how you feel your sleep quality is and how you function in the daytime.

So it's for me, and I think, Marie-Pierre, the research bears this out more broadly, that the most powerful dietary approach is a holistic approach.

When you look at improving sleep quality is exactly that.

is not to pick one fruit and try to consume that every night in the hopes that you'll start to feel drowsy.

It is to look at your whole diet.

And kiwis can absolutely be part of that.

They're high in fibre.

But as Marie-Pierre indicated, I think a lot of what that misses is the way in which the foods that we eat and the way in which we combine those foods is also really important in terms of releasing some of those micronutrients and phytonutrients.

And I think if we start to focus on individual foodstuffs, we're missing a lot of the ways in which the foods we eat and the way in which we combine them are also really important for overall gut health and thereby probably through some of that mechanism, through the gut microbiome impact on sleep.

Yeah, I mean, I think caffeine has got itself a really bad name in the sleep world.

And definitely it is true to say that it can have a really long half-life.

So it can take a very long time for caffeine to leave your system.

And that is partly genetically determined.

So it depends on how effective your enzyme is at removing caffeine from your system.

And so some people are very efficient at metabolizing caffeine and can have coffee quite late at night and see no impact on their sleep, whilst others can find that only having a couple of cups relatively early in the day can still bring about impacts on their sleep later on.

So the general advice is usually for most people to stop caffeine intake after a roundabout lunchtime in order to minimize any potential impacts on sleep.

But, you know, again, my advice is somewhat more nuanced because, of course, we know there are loads of benefits to coffee, for example.

Again, there's a particular aspect of the microbiome that really likes coffee.

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