One Health Tweak a Week Podcast

Protein supplements are usually marketed at gym-goers, bodybuilders and people chasing bigger muscles. But the people who may benefit most are often the ones least likely to think about using them: older adults, plant-based eaters, people trying to lose weight without losing muscle, and those recovering from illness, surgery or hospitalisation.

In this episode of One Health Tweak a Week, we look at a more useful question than “Do protein shakes work?”: Are your meals actually giving your muscles enough protein?

You’ll learn why protein needs often rise from our sixties onwards, why appetite and fo...

n this week’s One Health Tweak a Week podcast, we’re looking at the form of exercise many health-conscious people still quietly avoid: strength training.

A couple of months ago, we talked about why resistance exercise matters for preserving muscle, function, and independence as we age. This episode comes at it from a different angle: not just whether strength exercise helps you stay stronger, but whether it’s linked with living longer.

We’ll unpack a just-published 30-year study of more than 147,000 US adults, which found that regular resistance exercise was associated with lower risks of...

This week’s One Health Tweak a Week podcast is about processed meat: not just bacon, sausages and hot dogs, but the everyday foods that quietly creep into otherwise healthy diets.

We’ll look at why processed meat is not simply “meat with a bit of salt,” and why regular intake has been linked with higher risks of colorectal cancer, type 2 diabetes, cardiovascular disease, stroke, heart failure and premature death. We’ll also unpack what actually counts as processed meat, including ham, salami, pepperoni, deli slices, chicken nuggets, many burgers, turkey bacon and “uncured” or “naturally cured” products.

Th...

This week’s episode is about one of the most overlooked signals shaping your sleep, mood, energy and long-term health: light.

Most advice starts at the wrong end of the day. We’re told to stop scrolling before bed, switch on night mode, or buy blue-light glasses. Those things can matter, but they miss the bigger pattern. Modern life has flattened the rhythm our bodies evolved to expect: bright days, fading evenings and dark nights.

Many of us now spend our days indoors in light that feels bright, but is biologically dim. Then, just as the...

This week, we’re tackling one of the most common reasons people hold back from eating more fruit: sugar.

Fruit is sweet. Fruit contains sugar. And if you’re trying to cut back on sugar, it’s easy to wonder whether apples, oranges, berries, grapes and pears should be on the “be careful” list.

But whole fruit is not sugar in disguise.

In this episode, we explain why “contains sugar” is not the same as “behaves like sugar”, and why whole fruit sits in a very different category from fizzy drinks, fruit juice, cakes, biscuits, s...

In this episode of One Health Tweak a Week, we look at why time in nature deserves a place alongside food, exercise and sleep as a practical health input.

Green space is often treated as a pleasant extra: a weekend walk, a holiday view, a nice background for a phone photo. But studies link regular exposure to nature with lower stress, better mood, improved sleep, lower blood pressure, better self-rated health, and lower risks of type 2 diabetes, cardiovascular death and premature death.

The most useful part is how achievable this is. You don’t need a...

Most protein advice focuses on how much you eat. Sometimes it talks about protein quality. But there’s a third question we rarely discuss: when should you eat it?

In this week’s episode of One Health Tweak a Week, we look at how protein timing changes the way your muscles respond, especially from midlife onwards. The key idea is simple: your muscles don’t benefit much from a constant trickle of tiny protein snacks. They respond better to clear, meaningful protein doses spread across the day.

We’ll look at why breakfast may be the most...

This week’s One Health Tweak a Week podcast tackles a frustrating problem many of us recognise: you try to eat better, cut back on the obvious offenders, and yet your waistline still refuses to budge.

The reason may be that belly fat, especially the visceral fat around your organs, is not just a food story. In this episode, we look at the overlooked non-food factors that can quietly drive abdominal fat upwards, including poor or irregular sleep, chronic stress, low mood, loneliness, inactivity, menopause, sleep apnoea, and some medications.

We also explore why visceral fa...

In this week’s episode, we’re talking about a small shift that could help you stay slimmer, sleep better, reduce reflux, improve your blood sugar, and possibly even support a longer, healthier life.

Most of us think meal timing is a minor detail. We focus on what we eat, while barely noticing that dinner has become the biggest meal of the day and is landing later and later. But the research suggests that this matters much more than most people realise.

In this episode, we’ll show you why your body handles food differently depend...

In this week’s episode, we look at one of the most underestimated foods for long-term brain health: fruit.

Most of us think of fruit as vaguely healthy, useful for vitamins and fibre, but not especially strategic. The research tells a different story. Eating about 200g of whole fruit a day is linked to lower risks of stroke, dementia, depression, and cognitive decline, and much of the benefit seems to arrive by that level.

In the episode, we walk through the evidence behind that 200g target, including what large studies have found about fruit and de...

In this week’s episode, we’re talking about a protein problem that gets far less attention than it should: as we get older, it’s not enough to get “some protein somewhere” across the day and assume that will take care of our muscles.

We tend to think about frailty as something vague and inevitable. It isn’t. Frailty steals strength, balance, confidence, and independence, and often starts earlier than people realise. One reason is that ageing muscle becomes less responsive to protein, just as appetite often begins to shrink.

In this episode, we explain the...

In this week’s episode, we’re looking at what really matters if you want to stay strong as you get older - and it’s not the number on a body-composition scan.

We hear a lot about protein, lean mass, and the need to optimise everything. But when it comes to healthy ageing, the more important question is whether you’re staying strong and physically capable. Measures like grip strength and walking speed tell us far more about later-life health and independence than a printout telling you how much lean tissue you have.

We talk thr...

In this week’s episode, we’re talking about visceral fat - the fat packed around your abdominal organs that is much more strongly linked than ordinary body fat to insulin resistance, worse cholesterol patterns, type 2 diabetes, and long-term cardiometabolic risk.

Most people assume the best way to reduce belly fat is to diet harder. But when you look specifically at visceral fat, the evidence points in a different direction. Large reviews suggest that exercise is more effective than calorie restriction for reducing this dangerous fat, even when dieting leads to more overall weight loss.

We’l...

In this episode, we explore a question that turns out to be much bigger than sleep alone: what happens when your body clock starts to drift?

The starting point is deceptively small. Over the past couple of months, my bedtime slipped by around 45 minutes. On paper, that sounds trivial. In practice, it brought early waking, rougher mornings, and that slightly wired, slightly frayed feeling that suggests something deeper is off. And that is the heart of this episode: the idea that functioning is not the same as being in sync.

We often treat poor sleep...

If you’ve ever looked at a bowl of grapes and thought, “This is basically sweets in disguise”, this episode is for you.

This week, we tackle a surprisingly anxious question: does eating fruit every day quietly sabotage your weight and waistline - or can it actually help?

We’ll walk through what large, long-term studies really show: people who eat around 200 g / 7oz of whole fruit a day - roughly two decent handfuls - tend to gain less weight over time, are less likely to become overweight or obese, and usually have slightly slimmer waists t...

If you’re going to spend money on extra-virgin olive oil, it’s worth making sure you’re not just buying a story on the label.

In this episode, we move from why EVOO is such a good health bet to how to actually choose, store, and use it so you’re more likely to get the benefits the studies point to.

We’ll look at why “extra-virgin” is a legal grade, not a health guarantee, and why polyphenols are the real stars. We’ll walk you through the simple signals that tilt you towards a higher-polyphe...

This week’s episode is about extra-virgin olive oil as a small daily habit that quietly pulls several big levers at once.

We look at why regular EVOO use keeps turning up in the data alongside lower risk of early death, fewer deaths from heart disease, cancer and dementia, a lower risk of type 2 diabetes and osteoporotic fractures, and slightly better weight and waist outcomes - even though it’s a calorie-dense fat.

We break down the practical “benefit zone” of roughly 10–30 ml a day (about 2 teaspoons to 2 tablespoons), why you don’t need to aim for Medi...

In this episode of One Health Tweak a Week, we zoom out from the protein hype and ask a calmer question: given your age and how you actually eat, how much protein makes sense – and are you anywhere near it?

Everywhere you look, the message is “add more protein”. High-protein labels are slapped on yogurts, cereal, bread, ice cream and snacks; fitness feeds throw around magic numbers like 0.8 g/kg, 120 g a day, 1.6 g/kg for “gains”.

But big national surveys suggest most under-65s are already at around 1.0–1.3 g/kg, and large cohort studies hint that th...

If you’re eating pretty well, avoiding sugar-sweetened drinks, and your belt still feels tighter than it should, this episode is for you.

In last month’s belly-fat episode, we asked listeners to upgrade just one ultra-processed eating occasion. More than half chose their snacks. That made me curious - and when I dug into the data, it made sense.

For many adults, snacks now provide around a quarter of daily calories, and a disproportionate share of added sugar, saturated fat, and ultra-processed food. In other words, your “just a biscuit” moments might be doing more dam...

In this episode of One Health Tweak a Week, we zoom out from individual habits - bedtime, breakfast, evening screens - and look at the bigger system they all feed into: your body’s internal clock.

We’ll walk you through what circadian rhythms are, why you have one master clock in the brain and lots of local clocks in organs like the liver and gut, and why health isn’t just about what you do but when you do it.

We’ll look at large studies showing that people with fragmented, irregular 24-hour routines have hig...

We’ve been told to eat our five a day for as long as we can remember - but what does the evidence actually say? And how much fruit do you really need to see measurable health benefits?

In this episode of One Health Tweak a Week, we look at three decades of data from over 100,000 adults to uncover the surprisingly strong link between whole fruit intake and healthy ageing. We’ll cover why fruit topped the leaderboard in a major study of people who reached age 70 free from major disease or disability - and what makes whol...

If you’ve ever thought, “I’m already doing quite a lot… surely the only way to get healthier is to overhaul everything,” this episode is for you.

This week, we dig into a new Lancet analysis of nearly 59,000 adults that asks a deceptively simple question: what happens when you make small, combined improvements in sleep, movement, and diet - instead of trying to perfect just one?

You’ll hear how higher SPAN scores (Sleep, Physical Activity and Nutrition) were linked with extra years of total and disease-free life, why the steepest gains appear at the bottom o...

This week on the One Health Tweak a Week podcast, we’re wading into the high-protein craze.

Everywhere you look there’s another “protein” label – bars, cereals, puddings, even water. You’re told more protein will help you build muscle, burn fat, and age well. At the same time, you may have heard whispers that too much could be harmful. So are high-protein foods actually helping your health – or just helping someone sell more ultra-processed snacks?

In this episode, I walk through why protein has become the wellness world’s favourite nutrient and Big Food’s favourite health...

This week on One Health Tweak a Week, we’re talking about belly fat that isn’t just cosmetic - the visceral kind packed around your organs.

You can have a “healthy” weight on paper and still be quietly accumulating fat in the wrong place. Visceral fat sits deep in the abdomen and chest, wrapped around organs like the liver, intestines, pancreas and even the heart - and it’s strongly linked with insulin resistance, type 2 diabetes, abnormal blood fats, fatty liver disease, cardiovascular disease and more.

The frustrating part? Your waist can worsen while the bathro...

This week’s episode is a New Year check-in - a little different from the usual “here’s one tweak” format.

Over the past year, One Health Tweak a Week has grown into a lively, health-literate community: curious, sceptical of fads, and far more interested in what actually moves the dial than what’s merely trendy.

Looking back at comments and polls, a few patterns stood out. You loved the calm, practical food rules that make everyday decisions feel simpler. But some sticking points remain stubbornly common - especially sleep (waking in the night) and long stret...

After eleven months of sending out weekly “health tweaks”, I did the slightly uncomfortable thing: I looked back and asked what actually changed in my own life.

This is a Christmas special, and it’s not a lecture. It’s a behind-the-scenes, mildly embarrassing report card on what happened when evidence-backed ideas met real life: deadlines, preferences, and the strange power of the bakery section in Marks & Spencer.

You’ll hear about the tweaks that genuinely stuck (including my new hard rule on microwaving food in plastic, and how that accidentally turned me into a “jar person”...

Most of us know we “sit too much”, but how much is too much - and can a daily walk or gym session really cancel it out?

In this episode, I dig into what the research actually says about long days spent sitting and your risk of early death, heart disease, type 2 diabetes and cancer. We’ll look at where the risk curve really starts to bend upwards (spoiler: it’s lower than you might think), and why you can be physically active and still sedentary if most of your waking hours are spent in a chair.

I’l...

Is all this effort to “eat healthier” actually worth it - in years of life, not just in vague virtue points?

In this episode of One Health Tweak a Week, we dig into two big pieces of research that try to answer exactly that. Using data from hundreds of thousands of people in the UK and six other countries, researchers modelled what happens to life expectancy when you move from a typical Western diet to something healthier - and then to a fully “longevity-optimised” plate.

We’ll talk through what the numbers really say: why realistic...

Some people can fall asleep anywhere, any time. For everyone else, there are two main weak spots that make nights miserable: getting to sleep in the first place, and waking at 3–4 am and not getting back off.

In this episode, we’ll walk you through a joined-up, practical plan for both.

We’ll start with the quiet culprits that wire you up during the day - social jetlag, naps, caffeine, alcohol, late meals and screens - and how they set you up for “tired but wired” nights and early-morning wakefulness.

From there, we build a re...

You probably know the feeling: you’re exhausted, you’ve tried all the usual sleep tips… and yet your brain refuses to get the memo.

In this episode, we’re not adding more “sleep hacks” to the pile. We’re asking a different question: what if your problem isn’t sleep, it’s timing?

I’ll walk you through the two systems that quietly run your nights - sleep drive (how long you’ve been awake) and your circadian clock (your internal 24.2-hour metronome). We’ll look at how indoor days, late screens, irregular meals, naps, lie-ins and weeken...

If you’re not sleeping well, chances are you’ve already tried the basics - less caffeine, fewer screens, maybe even a magnesium supplement or two. But what if the problem isn’t your bedtime routine… but something deeper you haven’t yet spotted?

In this episode, we walk through a 7-step self-audit to help you figure out what’s really going wrong with your sleep - and why. You’ll learn how to:

* Identify your true sleep pattern (is it falling asleep, staying asleep, or waking up exhausted?)

* Spot lifestyle, hormonal, or emotional fact...

Can your diet really change how acidic your body is? And if so… should you care?

This week, we’re diving into the alkaline diet - the wellness trend that claims eating “alkaline-forming” foods (like leafy greens and lemons) and avoiding “acid-forming” ones (like meat, cheese, and eggs) can lower your cancer risk, improve your bones, balance your hormones, and even cure reflux.

But how much of that is science… and how much is marketing theatre?

We’ll unpack what the alkaline diet actually is, what a PRAL score measures, and why your blood pH isn’t s...

Naps can be magic - or a mistake. In this episode of One Health Tweak a Week, we dive into the science behind daytime naps: when they help, when they harm, and how to get them right.

You’ll hear why short naps (under 30 minutes) can sharpen your focus, mood, and memory - even if you already sleep well at night.

But you’ll also learn about the darker side of daytime dozing: longer naps, especially those over 45 minutes, have been consistently linked with higher risks of cardiovascular disease, type 2 diabetes, obesity, and even premature deat...

Ever feel bloated or uncomfortable after what should have been a perfectly healthy meal?

It might not be your imagination - and it might not be gluten, dairy, or stress, either. In this episode, we’re talking about FODMAPs: a group of fermentable carbohydrates found in everyday foods like fruit, legumes, dairy, wheat, and vegetables like onions and garlic.

For most people, these carbs are beneficial. But for some - particularly those with IBS or sensitive guts - they can trigger symptoms like bloating, cramps, diarrhoea, or constipation.

We’ll unpack what FODMAPs are...

Do you really need 10,000 steps a day? The science just got sharper.

This episode breaks down the largest device-based analysis to date - hundreds of thousands of people across 88 studies - and the results might surprise you.

Turns out, the biggest drop in early death risk happens not at 10,000 steps, but much earlier. We’re talking steep gains by 6,000 steps, especially for heart disease, cancer mortality, and overall longevity.

But it’s not just about staying alive. We also cover what the data says about:

* Dementia risk, which continues to fall all...

Is eight hours of sleep really the ideal for adults - or just a widely accepted myth?

In this episode of One Health Tweak a Week, we examine what decades of high-quality research reveal about the relationship between sleep duration and long-term health.

Drawing on meta-analyses and cohort studies involving millions of participants, we explore why seven hours of sleep per night may be more consistently linked to better outcomes than the traditional eight. Across multiple conditions - including cardiovascular disease, type 2 diabetes, dementia, and all-cause mortality - the data show a U-shaped curve, with...

Most of have heard for years that carbs are the enemy. But what if cutting carbs wasn’t the key to ageing well - and might even work against us?

In this week’s episode of One Health Tweak a Week, we take a fresh look at the carbohydrate question through the lens of a massive new analysis from the legendary Nurses’ Health Study. This isn’t about fad diets or weight loss tricks - it’s about what helps you reach your seventies still sharp, still active, and free of major disease.

You’ll hear:

...

Most supermarket bread is marketed as wholesome - but a closer look tells a different story.In this episode we dig into the additives hiding in everyday loaves, from gluten boosters to “natural flavours,” and explain why one common preservative, calcium propionate, stands out. You’ll learn:

* Why even wholemeal bread qualifies as ultra-processed food

* How calcium propionate can disrupt blood-sugar control and weight regulation

* Simple ways to find - or bake - a cleaner, tastier loaf

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Monounsaturated fats don’t get much airtime.

Health advice tends to focus on cutting saturated fats or getting enough omega-3s - but hardly anyone talks about the fat we might need the most.

In this episode, we shine a light on monounsaturates: the overlooked fats found in olive oil, nuts, seeds, and avocados that could have a profound impact on your long-term health.

Drawing from large population studies - including one that followed nearly 200,000 people for over a decade - we explore how getting the right balance of fats may lower your ri...

“Eat the rainbow.”

“Thirty plants a week.”

These mantras are everywhere, from wellness blogs to Instagram reels. The idea sounds simple: the more variety on your plate, the healthier you’ll be. But does the science actually back that up?

In this week’s episode of One Health Tweak a Week, we dig into the research on dietary diversity - and what we find isn’t as neat and colourful as the slogans suggest. Yes, restrictive diets are risky: living mostly on meat and potatoes, or tea and toast, is a fast track to nutrient ga...