How much protein do women need is a question the internet answers badly. Search for it and you will find yourself in a world of shakers, macros and men lifting heavy things. Helpful, if that is your life. Considerably less so if you are trying to work out what to eat at eight in the morning with a toddler on your hip.
The honest answer changes across your life in ways that gym-focused advice never addresses. Your cycle affects it. Pregnancy raises it substantially. Breastfeeding raises it further. Recovery from birth or surgery changes it again.
Here are the real numbers, what protein is actually doing beyond muscle, and how to get enough from food you will genuinely eat.
Why protein advice is never written for you
The mainstream conversation about protein assumes a particular reader: someone training regularly, tracking intake, and primarily interested in building muscle.
That leaves a large gap. Because the woman who most needs to think about protein is often the one least likely to encounter useful advice about it. She is pregnant, or feeding a baby, or recovering from surgery, or navigating a cycle that affects her appetite and energy in ways nobody explained.
She is also, statistically, more likely to have been given advice about eating less rather than eating enough, which is precisely the opposite of what tends to help.
So let me give you the version written for you.
How much protein do women need
The UK reference nutrient intake is 0.75g of protein per kilogram of body weight daily. For a woman of seventy kilograms, that is around fifty-three grams a day.
Here is the crucial thing about that number: it is a floor, not a target. Reference intakes are set to prevent deficiency in most of the population. They are the amount below which you would expect problems, not the amount at which you would expect to thrive.
A growing body of research suggests higher intakes better support muscle maintenance, bone health, satiety and blood sugar stability, particularly as we age. Many researchers and practitioners now suggest somewhere between 1.0 and 1.2g per kilogram for general health, rising higher in specific circumstances.
For that same seventy kilogram woman, that is roughly seventy to eighty-five grams daily. Meaningfully more than the reference figure, though still entirely achievable from food.
A practical way to think about it: somewhere between twenty and thirty grams of protein at each of three meals gets most women into a genuinely good range, without weighing or tracking anything.
Why your needs change
This is the part almost nothing addresses, and it matters.
Across your cycle. Some research suggests protein requirements are modestly higher in the luteal phase, the stretch between ovulation and your period, when your resting metabolic rate rises slightly. This is also when cravings and hunger tend to increase. Prioritising protein in that phase, rather than fighting the hunger, genuinely helps with both mood and cravings. Our article on eating with your cycle covers the wider picture of phase-based eating.
In pregnancy. Requirements rise substantially, particularly from the second trimester as your baby’s growth accelerates and your own blood volume, placenta and tissues expand. This is building work, and it needs materials.
While breastfeeding. Higher again. You are producing milk around the clock, and if your intake falls short, your body draws on your own stores to protect the milk. Our article on what to eat while breastfeeding explains why that means shortfalls show up in you rather than your baby.
Recovering from birth or surgery. Tissue repair requires protein directly. After a caesarean, a significant tear, or any surgery, requirements rise while your ability to prepare food falls, which is an unhelpful combination worth planning around.
As you get older. Muscle becomes harder to maintain and easier to lose, and protein needs rise rather than fall. This becomes particularly relevant through perimenopause, when declining oestrogen accelerates muscle and bone loss.
What protein is doing beyond muscle
If you think of protein as a gym thing, this is the reframe.
Hormone production. Many of your hormones are built from amino acids, and the enzymes that produce and process the rest depend on them too.
Blood sugar stability. Protein slows how quickly glucose enters your bloodstream. A carbohydrate eaten alone spikes and crashes; the same carbohydrate with protein alongside behaves entirely differently. This is why protein affects your energy, mood and cravings so directly. Our article on blood sugar balance covers the mechanism properly.
Satiety. Protein is the most satiating macronutrient by a considerable margin. Meals containing adequate protein keep you genuinely full for longer, which is why low-protein eating tends to leave you grazing all afternoon.
Hair, skin and nails. All built largely from protein. Hair growth is one of the first things your body deprioritises when intake is low, which is why postpartum shedding and low protein so often coincide.
Tissue repair. Everything from a scraped knee to a caesarean scar.
Immune function. Antibodies are proteins.
Iron absorption. Meat, fish and poultry improve absorption of iron from plant foods eaten alongside them, which matters if you are managing low iron. Our article on postpartum anaemia covers this in more detail.
How to tell if you are not getting enough
Rarely dramatic, and easy to attribute to something else.
- Constant hunger, particularly grazing through the afternoon and evening
- Strong cravings, especially for sugar and refined carbohydrate
- Energy that dips sharply a couple of hours after eating
- Hair thinning or slow growth, brittle nails
- Slow healing of cuts, grazes or surgical sites
- Losing strength or finding everyday lifting harder
- Feeling cold more than those around you
- Getting ill frequently or taking a long time to recover
Any one of these has other explanations. Several together, particularly alongside a diet that is heavy on carbohydrate and light on protein, make it worth looking at.
Breakfast is where most women lose it
If you change one thing after reading this, make it breakfast.
The typical British breakfast is almost entirely carbohydrate. Toast. Cereal. A pastry on the way to work. Porridge made with water. Fruit alone. All of these spike your blood sugar, drop you an hour or two later, and set up a day of chasing energy.
Worse, it front-loads your protein into the evening, which is the least useful place for it.
What to do instead, in rough order of effort:
Eggs, however you like them. Two eggs give around twelve to fourteen grams. On wholegrain toast with avocado, that is a genuinely solid start.
Greek yoghurt, which contains roughly double the protein of standard yoghurt. A large bowl with nuts, seeds and fruit gets you to twenty grams comfortably.
Porridge made with milk rather than water, with a spoon of nut butter and some seeds stirred in. Small changes, meaningful difference.
Leftovers from dinner. There is no rule that breakfast must be breakfast food, and last night’s chilli or curry is a perfectly good morning meal.
If mornings are genuinely impossible, prepare it the night before. Overnight oats with yoghurt and seeds require no morning effort at all.
Realistic sources
Framed around what actually gets eaten rather than what looks impressive.
Animal sources, which are more concentrated and contain all essential amino acids: eggs, Greek yoghurt, cottage cheese, hard cheese, chicken, beef, fish, tinned tuna, tinned salmon, prawns, milk.
Plant sources, which are genuinely good but generally less concentrated, so portions need to be larger: lentils, chickpeas, black beans, tofu, tempeh, edamame, nuts, seeds, peanut butter, quinoa, oats.
Rough figures to anchor you: two eggs around 13g. A 150g pot of Greek yoghurt around 15g. A chicken breast around 30g. A tin of tuna around 25g. A 100g serving of tofu around 12g. Half a tin of lentils around 9g. A handful of almonds around 6g. Two tablespoons of peanut butter around 7g.
You can see from those numbers why breakfast matters. Toast and jam contributes almost nothing, while eggs on toast contributes meaningfully.
Spreading it through the day
One large evening portion is less useful than the same amount spread across your meals, for a few reasons.
Your body uses protein most efficiently in moderate amounts at a time, and there is reasonable evidence that distributing intake across the day better supports muscle maintenance than concentrating it.
More practically, the blood sugar and satiety benefits only apply to the meals that actually contain protein. A protein-heavy dinner does nothing for the mid-afternoon crash you had at three o’clock.
Aim for something at every meal and most snacks. Twenty to thirty grams at each of three meals, plus a protein-containing snack or two, covers most women comfortably without any arithmetic.
Protein powders
Honestly? Most women do not need them, and the marketing considerably overstates their necessity.
When they genuinely help. If you are struggling to eat enough, which is common postpartum or through illness. If you are vegetarian or vegan and finding the numbers hard to reach. If mornings are genuinely impossible and a smoothie is the only realistic option. If you are recovering from surgery with a poor appetite.
When they are unnecessary. If you are eating three meals a day containing protein, you almost certainly do not need one.
What to look for if you do use one. A short ingredient list. Third-party testing, particularly relevant in pregnancy or breastfeeding, since supplements are less tightly regulated than food. Minimal added sweeteners if they upset your digestion. Whey is well absorbed if you tolerate dairy; pea and soy protein are good plant options.
A note for pregnancy and breastfeeding: do check any supplement with your midwife or a pharmacist, since some contain added herbs or vitamins at levels that are not appropriate.
Food first, always. A powder is a convenience, not a superior source.
If you are vegetarian or vegan
Entirely achievable, with a bit more attention.
Portions need to be larger, since plant sources are less concentrated. Half a tin of lentils gives roughly a third of what a chicken breast does.
Variety across the day matters more than combining at every meal. The old advice about carefully pairing rice and beans at the same sitting has been superseded; eating a range of plant proteins across the day is sufficient.
Soy, quinoa and buckwheat contain all essential amino acids on their own, which makes them particularly useful.
Watch alongside: B12, which requires supplementation on a vegan diet and is genuinely important rather than optional. Iron, since plant iron is less well absorbed and needs vitamin C alongside. Zinc, calcium, iodine and omega-3, all of which need a little more thought. Our article on gut health is also worth reading, since a high-fibre plant diet can affect mineral absorption if digestion is struggling.
What to hold onto
The official minimum is a floor. Most women feel considerably better somewhere above it, and the simplest route there is protein at every meal rather than a big hit at dinner.
Fix breakfast first, since that is where most of the ground is lost. Keep easy protein available for when you have no time or capacity. And know that your needs genuinely rise through pregnancy, breastfeeding and recovery, which are precisely the times when eating properly is hardest and matters most.
No powders required, no tracking necessary. Just something with protein in it, three times a day.
A gentle note
If you would love help building meals that actually keep you going, I am here. I offer warm, one-to-one nutrition coaching with no tracking, no restriction and no lectures.
Written by
Brydee Thomas
Holistic health coach and founder of Radiant Bloom, supporting women through trying to conceive, pregnancy and the postpartum months. Evidence-based guidance, no programmes and no generic plans.