We joke about forgetting where we put the keys or why we walked into a room - but dementia is no laughing matter. It’s already the leading cause of death in the UK and climbing fast in most Western countries.

The common belief? Dementia is down to fate - age, genes, bad luck.The reality? Almost half of your dementia risk is within your control.

In this episode, we unpack the latest findings from The Lancet’s global dementia panel. Their report highlights 15 risk factors - from diabetes and blood pressure to less obvious ones like hearing loss, poor vision, loneliness, and even the air we breathe.

You’ll learn:

* Why treating depression or hearing loss can lower dementia risk as much as managing blood pressure.

* Which everyday habits quietly add or subtract years from your brain’s health.

* How to make sense of the evidence without getting lost in medical jargon.

Most importantly, I’ll walk you through a practical framework: four categories (Mind, Body, Senses, Lifestyle) and a seven-day kick-start plan to get you moving right now.

This isn’t about fear - it’s about agency. You don’t have to overhaul your life overnight. Start with one action, one change, one small step toward a sharper future.

👉 Press play and future-proof your brain, one tweak at a time.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

This week, we’re diving into one of the most comprehensive pieces of nutrition research - Harvard’s 30-year study following more than 105,000 Americans to see how different eating patterns affect healthy ageing.

And here’s what I think is most important: while the Alternative Healthy Eating Index topped the charts, the real gold is in the details - a ranked list of individual foods linked to staying strong, sharp, and independent well into later life.

You can see how the foods stack up in the diagram below.

In this episode, you’ll learn:

* The green list foods to make daily staples

* The red list foods that quietly chip away at your future health

* The muddled middle foods whose impact depends on how they’re prepared and served

* How to use this simple list to guide your choices without following a rigid “named” diet

No fads. No guesswork. Just clear, evidence-based guidance you can put into practice at your very next meal.

Whether you’re a long-time listener or new to the podcast, this episode will give you a roadmap for eating in a way that supports the life you want - for as long as possible.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

Not all carbs are created equal - and one type might just feed your gut, steady your blood sugar, lower cholesterol, and reduce your risk of cancer.

This week, we dive into resistant starch: what it is, where to find it, and why it’s a nutritional sleeper hit.

You’ll learn:

* Why some starches act more like fibre (and why that matters)

* What happens when you cook, chill and reheat your carbs

* Which humble foods consistently show up in longevity studies

* Why Big Food is jumping on the resistant starch bandwagon

* And how to tweak your meals to support your microbiome (without buying anything weird)

No gimmicks. No fibre-fortified snacks. Just better carbs.This isn’t just starch. It’s strategy.

🎙️ This Week on One Health Tweak a Week: Is Your Healthy Bread Really That Healthy?

You’ve switched to wholegrain. You buy seeded. You skip the white fluff. So your bread’s healthy… right?

Maybe not.

In this episode, we lift the lid on supermarket loaves - from those labelled “wholemeal” to your favourite organic sandwich bread - and ask: what’s really inside?

Turns out, even the brown, rustic-looking loaves marketed as healthy fall under the category of ultra-processed food. And while many of the additives used in modern breadmaking are harmless (some are even things you’d find in your own kitchen), there’s one ingredient that might quietly be messing with your metabolism: calcium propionate.

Just three slices a day could impair your insulin sensitivity and increase your risk of weight gain and type 2 diabetes.

We’ll explore:

* What ultra-processed really means - and why it matters

* How the Chorleywood process revolutionised (and degraded) bread

* The truth about gluten, emulsifiers, and other common additives

* Why calcium propionate deserves a place on your “watch” list

* How to spot it - and better alternatives to try

Plus, I’ll share the results of my deep dive into a baker’s dozen of top-selling supermarket breads in the US and UK… and what led me to start baking my own.

This one tweak could improve your daily staple - and help you reclaim your bread from the ultra-processed pile.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

Are you running low on magnesium - without even knowing it?

Half of all adults in developed countries don’t get enough magnesium, and the consequences are anything but minor.

In this episode, we unpack what’s quietly become one of the most overlooked health risks of our time. Magnesium is essential for over 300 cellular processes - from keeping your heart beating steadily to regulating blood sugar, supporting sleep, calming the nervous system, and protecting your brain. Yet it’s slipped through the cracks of modern life.

You’ll learn:

* Why magnesium deficiency is so widespread (even in people who think they eat well)

* The foods and lifestyle factors that deplete your magnesium stores

* How low magnesium levels affect everything from sleep and blood pressure to insulin resistance, osteoporosis, and cognitive decline

* Why blood tests often miss the problem - and what to do about it

* Simple ways to raise your magnesium levels through food and, if needed, supplements

This isn’t a fringe wellness topic. It’s an under-the-radar epidemic affecting energy, mood, and long-term health - and one that’s surprisingly easy to fix once you know what to look for.

Whether you’re dealing with stress, fatigue, restless legs, or just want to protect your heart and brain as you age, this episode offers practical, evidence-backed steps to support your magnesium levels and your health.

🎧 Tune in now - your cells will thank you.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

We all know tea is good for us… don’t we? But which one - green or black - actually delivers the most health benefits? And could your daily cuppa be doing less than you think (or even undoing the good entirely)?

In this episode, we dig into the science behind the world’s favourite drink. We’ll look at how green and black tea compare on everything from heart health and brain ageing to cancer risk and weight loss. You’ll learn how caffeine, L-theanine, and antioxidants differ between matcha, sencha, and builder’s brew - and why more isn’t always better.

We’ll also tackle the big, milky question: does adding milk (or plant milk) wipe out the benefits? And what about contaminants like pesticides, fluoride, and heavy metals—are they something to worry about?

Expect strong evidence, surprising findings, and a few wry truths about those influencer-beloved matcha lattes. If you’ve ever wondered whether it matters what kind of tea you drink - or how you drink it - this is the episode for you.

So, before you put the kettle on… press play.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

We all know the advice: brush your teeth twice a day for two minutes.

But is that really the best we can do for our oral - and even systemic - health?

In this week’s episode of One Health Tweak a Week, we dive into the science behind brushing: how often, how long, and how gently you should be brushing for optimal results. Spoiler: brushing more doesn’t always mean brushing better.

We’ll explore:

* Why plaque builds up so quickly - and why brushing once a day might not be enough

* The surprising risks of brushing too often or too aggressively

* Why two minutes is the sweet spot for most people, and who might benefit from brushing longer

* How brushing technique, bristle softness, and timing (especially after acidic foods) can make or break your dental health

* And how brushing effectively doesn’t just protect your teeth - it could also reduce your risk of heart disease, stroke, diabetes, and more.

Whether you’ve always followed the rules or haven’t thought much about your toothbrush since the last dentist visit, this episode offers simple, science-backed tips that could protect more than just your smile.

🎧 Listen now and give your brushing routine the upgrade it deserves.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

Is your decaf doing more harm than good?

This week on One Health Tweak a Week, we’re diving into the surprising science of decaffeinated tea and coffee - and why your choice might matter more than you think.

If you’ve ever swapped to decaf to help with sleep, anxiety or bladder issues, you’re not alone. Decaf is on the rise, especially among younger and older drinkers alike. But not all decaffeination methods are equal - and some come with unexpected risks.

In this episode, we explore:

* How decaf is actually made - from water and CO₂ extraction to chemical solvents like methylene chloride

* Which methods are safest - and which still leave behind toxic residues banned in other industries

* What decaffeination does to polyphenols and antioxidants - are you losing the healthy stuff along with the caffeine?

* Why switching to decaf could prevent life-altering falls in older adults - and how this seemingly minor decision can have major consequences

Whether you already drink decaf or wouldn’t touch it with a bargepole, this is a fascinating look at what’s really in your cup, and how to choose better for your long-term health.

One small tweak. Big potential payoff.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

We’ve all heard it: a glass of red wine is good for your heart. Maybe even a few are fine. It’s comforting. It’s culturally baked in. But is it true?

In this episode, we’ll dig into the seductive myth that moderate alcohol is healthy, and unpack what the evidence really says. From flawed studies and industry spin to the way risk gets smoothed over in headlines, we’ll take a sober look at where that “protective effect” idea came from, and whether it still holds up.

This isn’t a finger-wagging lecture. If you enjoy the odd drink, I get it. I do too. But if we’re going to drink, let’s do it with open eyes - not clouded by wishful thinking disguised as science.

If you’d like to do the exercise discussed and see how your drinking affects you health, here’s the information you need:

Here’s a quick-reference cheat sheet showing the alcohol content of common drinks:

How to use it:

* If you drink the same amount daily, just use that number.

* If your drinking varies, add up your weekly intake and divide by seven to get your daily average.

Now you’ve got your grams per day - now look at the graph below and find your place on the curve.

Let’s say you drink two large glasses of wine with dinner. That’s 2 x 26g = 52g of alcohol a day.

Trace 52 along the bottom axis of the graph. Now move up to the curve.

You’ll see that your risk of premature death is around 2.4 times higher than if you didn’t drink at all.

Science-backed advice, simple steps, real results. Subscribe to One Health Tweak a Week today and take the guesswork out of healthy living.

Smoothies: health food or hidden hazard? If you’ve ever wondered whether your morning blend is helping or harming your health, this episode is for you.

What started as a personal frustration - being bombarded by online ads warning that “smoothies are the most toxic drink known to man” - led us down a science-backed rabbit hole. Are these claims nonsense? Or is there a sliver of truth beneath the clickbait?

In this episode, we look into the science of fruit in all its forms: whole, juiced, and blended. We explore why health authorities limit fruit juice intake, what happens when you strip away fibre, and why the same fruit can behave so differently depending on how it’s processed. You’ll learn how juice affects blood sugar, appetite, and long-term health - and why it doesn’t offer the same protection as whole fruit.

Then we turn to smoothies. Are they a simple shortcut to your five-a-day? Or do they come with stealth calories and degraded nutrients? You’ll discover how ingredients - from banana to protein powder - affect everything from polyphenol retention to satiety, and why how you blend (and when you drink it) really matters.

Packed with practical tips and myth-busting insights, this episode will help you blend smarter, chew more mindfully, and rethink what “healthy” really means in the context of fruit.

Bottom line? Whole fruit still wins. But there are smarter ways to make smoothies work for you - without falling for the hype.