How Much Protein Do You Need Per Day: A Practical Guide

For most healthy UK adults, the baseline is roughly 45 g of protein a day for women and 56 g for men, based on 0.75 g per kilogram of body weight. That figure is a minimum reference point, not a universal target, so your needs may be higher if you're older, active, pregnant, breastfeeding, or recovering from illness.

You may be asking because breakfast was toast, lunch was a rushed sandwich, and dinner is the only meal where protein appears in a noticeable portion. Or perhaps you're training regularly and wondering whether the standard UK recommendation applies to muscle repair as well as basic health. The short answer to how much protein do you need per day depends on more than sex alone. Body weight, age, training, health, pregnancy and the way you distribute protein across meals all matter.

Table of Contents

• What the UK Daily Protein Baseline Actually Is
  • A worked example
• Where the Standard Answer Falls Short
  • The age gap is easy to miss
• How to Calculate Your Own Daily Protein Target
  • Three examples
• Factors That Push Your Needs Up or Down
  • Activity changes the purpose of the number
• Why Distribution Across the Day Matters
  • Build a repeatable meal rhythm
• Simple Ways to Hit Your Number With Real Food
  • Add rather than replace
• Putting It Together and Common UK Pitfalls

What the UK Daily Protein Baseline Actually Is

The UK adult Reference Nutrient Intake, or RNI, is 0.75 g of protein per kilogram of body weight per day. Guidance from the British Nutrition Foundation uses this weight-based benchmark, which is more useful than memorising one fixed number because it adjusts to your size.

For a quick calculation, convert your weight to kilograms and multiply it by 0.75. A 60 kg adult would calculate 60 × 0.75 = 45 g per day. At 74 kg, the result is about 55.5 g, while a 75 kg adult would need about 56 g. Those calculations explain the familiar UK figures of roughly 45 g daily for women and 56 g for men.

A worked example

Take a 70 kg adult:

70 kg × 0.75 g/kg = 52.5 g of protein per day.

That is the general adult UK RNI, a baseline for nutritional adequacy. The NHS protein fact sheet describes it as a minimum level for healthy adults, not a performance or recovery target. Someone training regularly, trying to preserve muscle while losing weight, or rebuilding strength after illness may need a different figure.

UK national diet data reported mean protein intakes well above the RNIs in all age and sex groups in the relevant National Diet and Nutrition Survey results (UK government nutrition tables). So the RNI works like a floor rather than a finish line. Exceeding it does not automatically mean that intake suits strength, recovery or muscle maintenance in later life.

Pregnancy adds 6 g per day. Lactation adds 11 g per day during the first 6 months and 8 g per day after 6 months, according to the UK reference document. During weight loss, the Trim protein guide for slimmers offers practical protein-planning guidance. For broader advice on food choices and eating patterns, consult this guide to diet and nutrition.

Where the Standard Answer Falls Short

The 0.75 g/kg figure answers a narrow question: the amount of protein generally associated with basic nutritional adequacy for healthy adults. It does not set a target for maintaining muscle in later life, adapting to training, or rebuilding tissue after surgery. Protein needs rise when the body is repairing damage, fighting illness, or coping with reduced food intake.

Clinical guidance reflects those extra demands. The British Dietetic Association cites 79–92 g per day for nutritionally vulnerable adults using a target of 1.2 g/kg/day. NHS hospital guidance recommends 1.2–1.5 g/kg/day during illness, cancer treatment, or wound healing, while severe illness may raise requirements to 2.0 g/kg/day (Royal Berkshire NHS protein guidance).

The age gap is easy to miss

Adults aged 65 and over may need about 1.0–1.2 g/kg/day. Frail older adults may need 1.2–1.5 g/kg/day, according to a UK-linked review of protein requirements in later life (protein and ageing review). Ageing can make muscle respond less strongly to a small serving. Illness, inactivity, and reduced appetite can then make muscle loss more likely.

The usual population answer can therefore give false reassurance. UK research found that fewer than half of older participants met the current 0.75 g/kg/day recommendation. For an older person eating little, meeting the baseline may be a starting point rather than a suitable muscle-preservation target.

Regular gym-goers, endurance athletes, people recovering from surgery, and those at risk of pressure ulcers need individual consideration. Pregnancy and breastfeeding add to the UK baseline, rather than replacing it. A supplement such as BrainQuick Brain Support Supplement is described in its product information as a vegetarian vitamin and mineral blend for focus and brain function. It is not a protein replacement and should not count towards a daily protein target.

How to Calculate Your Own Daily Protein Target

Use a simple four-step calculation rather than relying on a generic “women's” or “men's” number.

1. Record your body weight in kilograms. If your scales show pounds, convert to kilograms before multiplying. A calculator inside a food-tracking app can help, but check that the setting is using kilograms rather than pounds.
2. Choose the multiplier that fits your situation. Use 0.75 g/kg as the general adult baseline. If you're older, training, pregnant, breastfeeding or recovering from illness, a higher clinical or life-stage target may be more appropriate.
3. Multiply body weight by the chosen figure.
4. Round sensibly. Food portions aren't laboratory measurements, so a practical daily range is often more useful than pretending every gram is exact.

Three examples

A 60 kg sedentary office worker:
60 × 0.75 = 45 g per day. This matches the UK baseline for a 60 kg adult.

A 75 kg regular gym-goer:
75 × 1.6 = 120 g per day. The 1.6 figure is a performance-oriented example, not the general UK RNI, so it makes sense to consider training volume, goals and total diet rather than treating it as compulsory.

A 68 kg woman over 70:
68 × 1.2 = 81.6 g, which rounds to about 82 g per day. The higher figure reflects the later-life range described in the UK-linked review, rather than a sex-specific rule.

Practical rule: Calculate from your current body weight, then reassess when your activity, age-related needs or health situation changes.

You can use the result to set a protein goal in a food diary, the NHS 12-week plan or MyFitnessPal, but the app's target is only as reliable as the multiplier you enter. Don't put your weight in pounds into a grams-per-kilogram calculation. If you have kidney disease or another condition affecting protein handling, ask your GP or dietitian for an individual target before increasing intake.

Factors That Push Your Needs Up or Down

A healthy younger adult with a sedentary routine may meet general needs at the UK baseline. The number can rise when the body is building or repairing tissue, adapting to training, producing milk or resisting muscle loss. Body weight accounts for much of the apparent difference between men and women, so weight and life stage usually give a more useful starting point than sex alone.

The older-adult ranges are discussed in the UK-linked review of protein intake in later life. Pregnancy and lactation require extra protein because physiological demands change. Illness, wounds and severe illness can also raise requirements, but clinical advice should guide the final target.

Activity changes the purpose of the number

For a sedentary adult, the baseline is a general adequacy figure. Regular training creates another job for protein: providing amino acids for repair and adaptation. Strength training, endurance exercise and eating fewer calories can all make protein planning more important. The suitable amount depends on training volume, goals, energy intake and the rest of the diet, not on being labelled “active”.

Exercise meal ideas and broader training nutrition are covered in the Vitamin Planet exercise and fitness guide. Products marketed for weight management, such as METABURN 60 Capsules, are not protein foods. Its catalogue description presents it as a thermogenic weight-management formula intended to accompany diet and exercise.

Pregnancy, breastfeeding, later life, intensive training and illness can all make the standard adult figure unsuitable. Reassess the target when one of these applies, rather than treating the baseline as a rule for every situation. During medical treatment, follow your clinical team's advice, especially if kidney function or another condition affects how your body handles protein.

Why Distribution Across the Day Matters

A daily total can hide a weak pattern. Someone might eat very little protein at breakfast and lunch, then attempt to catch up with a large serving at dinner. That may reach the day's grams, but it doesn't necessarily provide the same repeated opportunities to stimulate muscle protein synthesis.

UK-related evidence cited in academic and university sources suggests that older adults may benefit from roughly 25–30 g of protein at each of three meals to stimulate muscle protein synthesis (research on protein distribution and ageing). The exact amount depends on the person and the meal's protein quality, but the practical message is straightforward: distribute protein instead of leaving nearly all of it until the evening.

Build a repeatable meal rhythm

A useful pattern is protein at breakfast, lunch and dinner, with an optional protein-rich snack if your target is higher. Breakfast is often the weak point because cereal and toast can provide energy without much protein. Adding Greek yoghurt, eggs, milk, tofu or beans can make the meal more balanced without requiring a complete change to your routine.

Try these two rules:

• Spread servings: Divide your target fairly evenly across three or four eating occasions.
• Avoid long gaps: Don't routinely leave most of the day without a protein-rich meal, especially if you're older or recovering from illness.

The evening meal still counts, and there's no need to fear eating protein later in the day. The bigger problem is relying on one meal to correct a pattern that leaves breakfast and lunch consistently light.

A meal plan can help you see the difference between total intake and distribution. This short video provides another visual explanation of spacing protein across the day:

Simple Ways to Hit Your Number With Real Food

Start with foods you already eat, then add a protein source where a meal is currently missing one. Chicken, tinned tuna, eggs, Greek yoghurt, milk, lentils, tofu, beans and Quorn can all fit into a UK eating pattern. Their exact protein content varies by brand, recipe and portion, so use the nutrition label when precision matters.

A practical day for an active adult might look like this:

• Breakfast: Greek yoghurt with oats and fruit.
• Lunch: Chicken or tofu in a wrap with salad and beans.
• Afternoon: Milk, yoghurt or a protein-rich snack.
• Dinner: Tinned tuna, eggs, Quorn, lentils or tofu with potatoes, rice or pasta and vegetables.

That structure is more useful than treating one food as a magic answer. For ideas that turn familiar ingredients into protein-packed meals for home cooks, browse this recipe resource from Just Cook It.

Add rather than replace

If breakfast is cereal, add milk and Greek yoghurt rather than throwing the cereal away. If lunch is soup, add beans, lentils, chicken, tofu or a side of eggs. This “add rather than replace” approach keeps the change manageable and protects the rest of the meal's fibre, carbohydrate and micronutrients.

A person with a higher target may find whey, casein or a plant-based protein powder useful when work, travel or appetite makes a full meal difficult. It's a convenience option, not a requirement. The whey protein concentrate guide explains how this category fits into a wider nutrition plan.

A supplement can't compensate for a diet with little variety. It also shouldn't be confused with unrelated products. For example, Brain Feed 5-HTP 60 tablet is described as a 5-HTP product made from Griffonia seed extract, with 60 tablets, and it isn't a protein supplement.

Putting It Together and Common UK Pitfalls

Use this three-part decision rule:

1. Start with 0.75 g/kg. Treat it as your general adult floor, not automatically your ideal intake.
2. Adjust for context. Add between 0.2 and 0.5 g/kg if you train hard, are over 65, are pregnant or breastfeeding, or are recovering from illness or surgery. Clinical situations may require a more specific target from a dietitian.
3. Spread the result. Divide your daily amount across three or four eating occasions, aiming for practical protein portions rather than one oversized dinner.

Five mistakes appear repeatedly in everyday UK eating patterns:

• Breakfast looks filling but isn't protein-rich: Toast or cereal may leave most of your protein for later.
• The RNI becomes a ceiling: A minimum adequacy figure isn't automatically a training, ageing or recovery target.
• Portions are measured inconsistently: Raw and cooked weights can differ, so compare like with like when using labels or tracking apps.
• Plant-only meals lack planning: Plant proteins can be less digestible, so a varied diet and a carefully chosen target matter.
• Illness reduces appetite at the wrong time: During wound healing or clinical stress, requirements can rise while eating becomes harder.

Your best target is personal: body weight gives you the starting calculation, while age, activity, pregnancy and health determine whether you should move beyond it.

Vitamin Planet offers protein powders, vegan proteins, sports nutrition, vitamins, minerals and broader health essentials through its UK online catalogue. Visit Vitamin Planet to compare options that can support your food-first protein routine, and choose products according to your needs rather than treating supplements as a substitute for balanced meals.