THE FOOD · INVESTIGATION
58g
Protein: when did
a nutrient become
a lifestyle?
Somewhere along the way, "how much protein is in that?" became a normal thing to ask about yoghurt.
So I wanted to know what we're actually asking for.
Protein bars. Protein water. Protein-enriched pasta. A yoghurt that proudly announces it has "20g of protein" on the front, in a font bigger than the word "yoghurt."
Somewhere in the last decade, protein went from being one of three macronutrients to being treated like the only one that counts. Hit your number. Get your gains. Don't waste a meal on "empty" food.
Underneath the marketing, I had a much quieter question: what is protein actually doing in my body?
START HERE
Protein has four jobs.
Muscle is only one of them.
A protein is a molecule built from smaller units called amino acids, strung into a specific order and folded into a specific shape. Along with carbohydrate and fat, it's one of the three macronutrients, providing roughly 4 kcal per gram. But energy isn't really its main job — building and running the body is.
Structure
Skin, hair, tendons, cartilage and, yes, muscle — all built from protein scaffolding.
Enzymes
Nearly every chemical reaction in your body is driven by a protein built to do exactly that job.
Defense
Antibodies are proteins, shaped specifically to recognise and neutralise invaders.
Messengers
Several hormones are proteins, carrying signals between organs and systems.
So the real question isn't "how much protein." It's "which amino acids, and from where."
WHY QUALITY MATTERS
Not every protein
source is built
the same way.
Nine amino acids are called essential, meaning your body can't make them and has to get them from food. Animal foods — meat, fish, eggs, dairy — contain all nine in amounts your body uses easily, which is why they're often called "complete" proteins.
Individual plant foods usually fall short on one or two. But your body isn't picky about timing — it keeps a rotating pool of amino acids and draws on it across the day. Combine sources like legumes and grains over a day or two, and the gap closes on its own.
ESSENTIAL AMINO ACID PANEL
Per typical protein-containing meal
* Animal foods generally supply all nine essential amino acids in useful amounts on their own. Plant foods usually need a partner — a grain with a legume, for instance — to complete the set.
THE OFFICIAL RANGE
The Nordic Nutrition Recommendations' recommended intake for most adults — around 58g a day for a 70kg person.
Of total energy intake, with 15% used as a general planning figure. Nordic and Baltic adults already average 15–19%.
The higher range recommended for older adults, to help protect muscle and physical function.
A wide range most people are already inside — no shaker bottle required.
TWO MYTHS, RETIRED
The claims that outlived
their own evidence.
THE MYTH
"Too much protein will wreck your kidneys."
THE EVIDENCE
The idea started with people who already had kidney disease, whose damaged kidneys genuinely benefited from eating less protein. That finding slowly drifted into a warning for everyone.
A 2018 systematic review and meta-analysis of healthy adults found no meaningful difference in kidney function between higher- and normal-protein diets. Higher intake does make kidneys filter a bit more — a normal response, not damage, in people whose kidneys are already healthy.
THE MYTH
"You have 30 minutes after training or the gains are gone."
THE EVIDENCE
The "anabolic window" is real — it's just not 30 minutes wide.
A widely cited 2018 review of post-workout nutrient timing found muscle protein synthesis stays elevated for roughly 24 to 48 hours after resistance training. Eating protein reasonably close to a workout is sensible. Sprinting for a shaker bottle isn't necessary.
THE ONE GROUP THAT GENUINELY NEEDS MORE
Protein across
a lifetime.
Muscle mass is easy to maintain. The standard 0.83 g/kg range is generally enough.
Muscle loss quietly begins. Total protein intake and regular strength training both start to matter more than they used to.
The recommended range rises to 1.2–1.5 g/kg, paired with resistance exercise, to help protect strength and independence.
Protein alone isn't the whole story at any age — but it's in this later stretch that the "eat more protein" advice genuinely earns its keep.
THE QUESTION I ACTUALLY CAME FOR
Okay, but do I need
a protein shake?
We've established that protein is a building material, that plant sources work fine in combination, and that most people in this part of the world are already eating enough of it.
Which brings us to the actual, honest question behind the protein-bar aisle.
The logic sounds good.
Most people don't need one.
The pitch for protein supplements usually goes something like this:
The first step is true. The second only holds up to a point. The third depends entirely on what your meals already look like.
Once total daily protein intake is adequate, research on muscle growth generally shows diminishing returns from piling on more — the body can only use so much for tissue-building at once, and the rest is simply used for energy or excreted.
A protein shake is also, at its core, a food. A convenient, pre-measured one — genuinely useful for someone with a specific target, a busy schedule, or a plant-based diet they're still dialling in. But it isn't nutritionally different in kind from a glass of milk, a tin of beans or a couple of eggs.
CONTEXT MATTERS
So when does extra protein actually help?
Older adults, to help protect muscle and physical function
Serious strength or endurance training with specific recovery goals
Recovering from illness, surgery or injury
Losing weight, where higher protein can help preserve muscle and support fullness
A plant-based diet that needs a bit of planning to cover all the essential amino acids
The less useful question is:
"How do I get more protein?"The more useful one is:
"Given who I am and what I'm doing, is my current protein intake actually a problem?"For a lot of people, the honest answer is no.
SO, WHAT DID I ACTUALLY LEARN?
Probably not what
the label promised.
I went looking for a reason to buy more protein powder.
What I found instead was a nutrient doing far more than building muscle, a myth about kidneys that outlived its original evidence, a 30-minute deadline that turned out to be more like 24 hours, and a population — mine — that's mostly already eating enough.
Spread decent protein sources across your meals, from whatever mix of animal and plant foods you actually eat.
Pay closer attention to it during the life stages and situations where it genuinely matters more — ageing, illness, serious training.
Don't let a number on a yoghurt lid decide what counts as a good meal.
Not a nutrient to fear running short on.
Not a nutrient you need to maximise either.
Just a building material, doing its job quietly in the background.
AND MAYBE THAT'S THE PART I WAS LOOKING FOR
Understanding gives us
better questions to ask.
I don't think the lesson of protein is that we should all be tracking grams more obsessively.
I think it's that the number on the label was never the point — the overall pattern of what we eat was doing the actual work.
"Am I getting enough protein?"
becomes"Does my usual way of eating already cover it?"
"Is there a specific reason — age, training, recovery — to pay it more attention right now?"
"Am I reaching for a supplement to solve a problem I actually have?"
And if the answer to those is basically no?
go back to being yoghurt.
Because nutrition is supposed to exist within our lives.
Not become another number we're quietly failing at.
I went into this expecting a case for eating more protein. I came out with a much smaller, much calmer list of times that's actually true — and permission to stop reading yoghurt lids quite so carefully.
Don't outsource that job to a label.
READ THE EVIDENCE
Sources
- Nordic Nutrition Recommendations 2023. Nordic Council of Ministers — Protein chapter.
- Geirsdóttir, Ó. G., & Pajari, A.-M. (2023). Protein – a scoping review for Nordic Nutrition Recommendations 2023. Food & Nutrition Research, 67.
- Devries, M. C., et al. (2018). Changes in Kidney Function Do Not Differ between Healthy Adults Consuming Higher- Compared with Lower- or Normal-Protein Diets: A Systematic Review and Meta-Analysis. The Journal of Nutrition.
- Schoenfeld, B. J., & Aragon, A. A. (2018). Is There a Postworkout Anabolic Window of Opportunity for Nutrient Consumption? Journal of Orthopaedic & Sports Physical Therapy.