Protein After 40: How Much You Need, Best Sources & Easy Meal Ideas
If you've spent any time around a gym, a supplement aisle, or an Instagram algorithm lately, you've heard it: "you need more protein after 40." It's true. It's also usually delivered with zero useful detail, a slightly smug tone, and a not-so-subtle nudge toward a £40 tub of powder you didn't ask for.
So let's do the useful version instead — what's actually going on, why it's worth caring about, how much you need, where to get it, and what it actually looks like on your plate.
Why Protein Becomes a Bigger Deal After 40
From your late 30s onwards, your body starts losing muscle mass a little more easily and rebuilding it a little more reluctantly — a process with the delightfully clinical name "sarcopenia." It's not dramatic, it's not something you'll notice overnight, and it is completely manageable. Two things push back against it hardest: resistance training (the lifting you're hopefully already doing with us) and enough protein to give your body the raw material to actually repair and build with.
Skip the training and eat plenty of protein, and you're leaving results on the table. Do the training but consistently under-eat protein, and you're doing the hard part without giving your body what it needs to reward you for it. Neither half works alone — which, if we're honest, is a very "life after 40" lesson: the shortcuts you're hoping exist mostly don't, but the boring combination absolutely does.
The Benefits: Why It's Worth the Effort
Beyond "helps with muscle," here's what actually improves when you get your protein consistently right:
It keeps you strong, not just fit. Protein gives your body the material to repair and build muscle after training, which is what turns your gym sessions into actual strength and shape change, rather than just tiredness.
It keeps you fuller for longer. Protein is the most satiating of the three macronutrients — meals built around it tend to keep hunger and cravings quieter for hours, which makes a real difference if you're also trying to manage your weight without white-knuckling it.
It helps steady your energy. A protein-light breakfast or lunch tends to leave you flatter and hungrier by mid-afternoon. Building meals around a solid protein source is one of the simplest ways to smooth out that slump.
It protects what you've already built. This matters even more if you're also in a period of eating a bit less to manage weight — enough protein helps your body hold onto muscle rather than losing it alongside fat, which is exactly what you want.
It supports healthy ageing more broadly. Maintaining muscle and strength as you get older isn't just about how you look — it's tied to staying capable, mobile, and confident doing the everyday things: stairs, luggage, getting up off the floor without a performance.
So How Much Do You Actually Need?
Here's the bit everyone dances around. A reasonable, well-supported target for most adults who are training regularly is somewhere around 1.6–2.2g of protein per kilogram of bodyweight per day. For an 80kg adult, that's roughly 130–175g a day.
Before you close this tab in despair — you don't need to hit that number precisely, and you definitely don't need an app tracking it forever. Think of it as a direction to lean in, not an exam you can fail.
A Simple Way to Think About It (No Scales, No Macro App Required)
A useful rule of thumb: aim for a palm-sized portion of protein at each main meal — chicken, fish, eggs, tofu, Greek yoghurt, beans, whatever you actually like eating — and you'll land in a sensible range most days without ever opening a tracking app. Three palm-sized portions a day, spread across breakfast, lunch and dinner, gets most people most of the way there. Add a protein-containing snack or two and you've got margin to spare.
Best Protein Sources to Reach For
You don't need anything exotic. A good mix of a few of these, most days, covers you comfortably.
Animal-based:
Chicken and turkey (breast or thigh — thigh has a bit more fat but is often juicier and just as easy to cook well)
Fish — salmon, mackerel and sardines (with the bonus of omega-3s), white fish, tinned tuna for speed
Eggs — genuinely one of the most convenient, versatile protein sources going
Greek yoghurt and cottage cheese — both punch well above their weight for protein per calorie
Lean beef and pork
Milk — easy to overlook, but a pint contains a surprising amount of protein
Plant-based:
Tofu, tempeh and edamame
Lentils, chickpeas and beans (also handy for fibre)
Quinoa
Protein-enriched pasta (a genuinely underrated shortcut)
Nuts, seeds and nut butters — lower in protein per calorie, but useful toppers rather than a whole meal's protein source
If you're vegetarian or vegan, the main adjustment is simply eating a slightly larger volume and a wider variety of plant sources across the day, rather than relying on any single one to do all the work.
What This Looks Like on Your Plate: Meal and Snack Ideas
Theory's fine, but this is where it actually gets useful. Here's what a realistic, no-fuss day can look like.
Breakfast
Greek yoghurt with berries and a spoon of nut butter or granola
Eggs on toast (scrambled, poached, however you like them) instead of just toast
Overnight oats made with milk or a protein-enriched yoghurt, plus some fruit
A protein shake blended with a banana if mornings are genuinely chaotic (no shame in the shake — we just don't want it doing all the work)
Lunch
A tin of tuna or some leftover chicken through a salad, rather than a salad that's mostly leaves
Halloumi or falafel added to a wrap or grain bowl
Leftovers from last night's dinner (the easiest option of all, and arguably the most underrated)
A couple of boiled eggs alongside a sandwich to top up what the bread and filling alone won't cover
Dinner
Most main courses already centre on a protein source — the main fix here is portion, using that palm-sized guide rather than a portion that's vanished into the pasta
A simple formula that works most nights: protein + vegetables + a carb source you actually enjoy (rice, potatoes, pasta — whatever fits)
Bulk-cook a base protein (a tray of chicken thighs, a batch of bolognese with added lentils) at the weekend so a proper dinner is no slower than a ready meal on a Tuesday
Snacks
Greek yoghurt or cottage cheese with fruit
A couple of boiled eggs, kept ready in the fridge
Edamame beans
A handful of nuts alongside some fruit
Leftover chicken or a tin of tuna, if you're the sort of person who's fine eating that straight out of the fridge (no judgement)
A protein bar or shake for the days when none of the above are within reach
What This Looks Like At Home
We see this play out constantly with our members — people who aren't trying to become bodybuilders, they just want the training to actually pay off in how they look and feel. One of our members, a busy professional juggling work and family life over in Goldington, started simply adding a protein source to breakfast and swapping her afternoon snack for something with actual substance. Nothing else changed. Within a few weeks her energy through the afternoon slump improved noticeably, and — perhaps more importantly for her patience with us — she stopped feeling like her gym sessions were "cancelled out" by not eating enough to recover from them.
That's really the whole point. Protein isn't a magic fix and it's not a punishment. It's just giving your body the materials to do something with all that hard work you're already putting in at the gym.
FAQ
Do I need protein powder? No — it's a convenient way to hit your numbers on busy days, not a requirement. Whole food gets you there just fine if you've got the time.
Will eating more protein make me "bulky"? No. Building visible muscle requires a deliberate training programme, a calorie surplus, and a lot of time — eating enough protein alongside your normal training just helps you recover, stay leaner, and hold onto the muscle you already have.
Do I need to eat protein immediately after training? Not really — the old "30-minute anabolic window" idea has been largely overstated. What matters far more is your total protein across the day; eating a good source within a few hours of training is plenty.
Is this different for women vs men? The per-kilogram target is broadly similar for everyone who's training regularly; the total grams will simply be lower for a smaller frame. Women going through perimenopause or menopause often benefit from erring toward the higher end of the range, given the extra muscle-preserving benefits it offers alongside strength training.
What if I'm vegetarian or vegan? Completely doable — lean on tofu, tempeh, beans, lentils, Greek-style yoghurt alternatives, and a wider variety of plant proteins across the day to cover your full range of amino acids. It just takes a bit more intention with variety.
Want Help Making This Actually Stick?
If reading this made you realise your breakfast has been coasting on toast alone for the last decade, you're not alone — and you don't have to overhaul everything overnight. This is exactly the sort of thing we help our members build into a normal week, without spreadsheets or guilt trips. If you'd like a second pair of eyes on your training and nutrition together, we'd love to have a chat — get in touch for a free consultation and we'll figure out what actually fits your life.