Protein for weight loss, how much you need a day and where to find it on a normal budget

UK guidance gives about 0.75g of protein per kg of body weight a day for adults, and when you are losing weight it helps to spread it across 3 meals. For a person of 80kg, about 12 stone 8lb, that is roughly 60g a day. Ordinary food covers it easily, with no special product.
Work out your daily protein
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How this calculation works
For adults, the British guideline is 0.75g of protein daily for each kilogram of body weight.
Example. For a weight of 70, that makes about 53 g a day, or roughly 18 g at each of 3 meals.
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Why it matters now
Protein contributes to the maintenance of muscle mass. When you eat less to lose weight, you want the loss to come mostly from fat, not from muscle. Many people also find that a meal with protein carries them more comfortably to the next one. Muscle is covered further in our article on why muscle matters.
A typical day, counted
- Breakfast. 2 eggs on wholegrain toast, about 15g.
- Lunch. A tuna and bean salad, about 25g.
- Snack. A pot of plain yoghurt, about 8g.
- Dinner. A chicken breast with vegetables and rice, about 30g.
That comes to around 75g without trying very hard. The figures are rounded and vary by brand and portion.
Good value sources
Protein does not need to be expensive. Eggs, tinned fish, frozen chicken, dried lentils, tinned chickpeas, milk and plain yoghurt are among the cheapest. Buying frozen fish fillets in bulk and cooking a pot of lentils on Sunday keeps costs down through the week. If you eat red meat, the NHS suggests cutting down to around 70g a day of red and processed meat if you currently eat more than 90g.
Without meat
Vegetarians and vegans can meet their needs with a mix of beans, lentils, tofu, nuts, seeds and, for vegetarians, eggs and dairy. The NHS guide to the vegetarian diet explains how to combine them. Variety across the day matters more than any single meal.
Spreading it out
Many people eat little protein at breakfast and most of it at dinner. Shifting some to the morning is often the most useful change. A practical habit is to see a protein food at every meal and build the rest of the plate around it. Greek-style yoghurt with oats, eggs, or beans on toast all help. More ideas are in our piece on breakfast that lasts until lunch.
More is not always better
For most healthy adults there is no benefit in going far above their needs. Extra protein still brings kcal. People with kidney disease may be advised to limit protein, so check with your GP first if that applies to you.
This article does not replace advice from your GP or another health professional, particularly if you have a medical condition or take regular medication.
Protein from the first meal
At Bicester Nutrition, coaches trained in nutrition follow members daily, which makes it easier to check that breakfast carries enough protein. Your free assessment is a chance to look at your own day.
Your weight loss curve
Add your profile and the curve is redrawn at once.
Losing 8 kg at the median pace would take roughly 11 weeks, or around 4 months at the gentlest one.
Most guidance puts lasting weight loss at 500 g to 1 kg per week, which is the ideal zone on the chart. Lose more than 1 kg per week consistently and the body eats into muscle and not just fat, shown by the hatched zone.
This projection is a rough guide only. Each person’s journey is their own, and results are not the same for everyone. The sums are done on your device, with nothing stored or sent anywhere. Over 65, speak to your doctor before anything else.
How this curve is calculated
At the top, the zone’s edge marks 500 g per week, the gentlest rate. At the bottom, its edge marks 1 kg per week, the point where risk starts.
Weight comes off faster in the first weeks, much of it water, before the pace eases. Beyond 40, the median curve gradually flattens as metabolism slows down. With the same effort, men generally lose a little faster than women.
Like real life, the journey curve includes plateaus a few days long and minor regains. It is no prediction of the path you will follow.
The tips here are general and are no substitute for medical advice.
Further reading
Daily support is set out in the club programme for better balanced eating.

