Protein and muscle mass in menopause: nutrition explained

Q: How much protein do I need during menopause?

The general UK adult recommendation, the Reference Nutrient Intake, is 0.75g per kilogram of bodyweight a day, around 45g for a 60kg woman. The emerging evidence puts the figure closer to 1.0 to 1.2g per kilogram a day to hold on to muscle during and after menopause. That higher range is not yet part of official UK guidance. If you are thinking about changing your intake significantly, talk to your GP or a registered dietitian first.

Q: Why does menopause affect muscle mass?

Muscle fades slowly as you age, and that loss speeds up as you move through menopause. Oestrogen helps your muscles use energy and keeps muscle cells working, so the significant drop in oestrogen and other hormones during menopause makes it harder for your body to hold on to and build muscle. Getting enough protein, alongside regular movement, can help slow this down.

Q: What are good protein sources for a plant-based diet during menopause?

Beans, peas, lentils, nuts, seeds, and soya foods such as tofu and edamame are all useful plant proteins. Because individual plant proteins differ in their amino acid mix, eating a variety across the day helps you cover a broad range. A registered dietitian can help you plan meals that meet your protein needs on a plant-based way of eating.

Q: Does it matter when I eat my protein during the day?

Spreading protein across your meals tends to support muscle building better than eating most of it in one go. Aiming for around 20 to 25g per meal is a practical approach, though this is not an official UK public health target. A simple way to picture it is letting protein-rich foods take up about a quarter of each meal, which fits widely used plate-based guidance on nutrition in menopause.

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If your muscles have felt weaker or slower to respond since menopause, there is a real reason for it. Muscle and strength tend to fade slowly as you age and that loss often picks up pace as you move through and beyond menopause if not supported which can lead to sarcopenia. Getting enough protein is one of the most practical things you can shift, and understanding how your protein and muscle mass needs change in menopause is where it starts.¹

Why muscle loss speeds up after menopause

The faster muscle loss you can notice around menopause is partly down to falling oestrogen. Oestrogen helps your muscles use energy and keeps muscle cells working well, alongside other hormones like testosterone, so when levels drop significantly, your body finds it harder to hold on to and build muscle. ²

Keeping enough muscle supports your strength, your metabolism, and the way you move through your day. What you eat, and protein in particular, is one area where you have direct influence.

The gap between standard guidance and the emerging evidence

The general UK guide for protein, the Reference Nutrient Intake, is 0.75g per kilogram of bodyweight a day. For a 60kg woman, that comes to around 45g of protein daily. This figure is the amount of protein considered sufficient to meet the needs of nearly all healthy women, rather than a number worked out for any one life stage.³

The current evidence puts the figure closer to 1.0g to 1.2g per kilogram of bodyweight a day to hold on to muscle and strength through menopause. That range is not part of current official UK guidance, and it is not a one-size-fits-all target. If you are thinking about changing your protein intake in a big way, it is worth talking it through with your GP or a registered dietitian.⁵

How you spread protein across the day matters

How much protein you eat in a day is only part of it. Spreading protein across your meals tends to help your body build and repair muscle better than loading it all into one sitting. Aiming for roughly 20 to 25g per meal is a practical way to do this, though that is general nutritional guidance rather than an official UK target. A registered dietitian can help you find a pattern that fits how you actually eat.⁴

Protein food sources across dietary preferences

You can meet higher protein needs with a varied diet whether you eat animal products, eat mostly plants, or sit somewhere in between. Animal sources include lean meats, fish, eggs, and dairy. If you eat mainly or only plant foods, good sources include beans, peas, lentils, nuts, seeds, and soya foods such as tofu and edamame.⁷

Plant proteins differ in the mix of amino acids they contain, the building blocks your muscles use. Including a range of sources across the day helps you cover the full set.

Practical ways to get more protein from food

Add a palm-sized portion of protein to each main meal, such as chicken, fish, eggs, lentils, or tofu.
Reach for Greek yogurt, cottage cheese, or a handful of nuts when you want a protein-rich snack.
Swap refined grains for higher-protein options where you can, like quinoa in place of white rice, or pulses stirred into a grain dish.
If you eat plant-based, combine different sources across the day, for example lentils at lunch and a nut-based snack later, to cover all the essential amino acids.

If you want protein advice worked out for your own body at this stage, asking your GP for a referral to a registered dietitian is a practical next step.

Frequently Asked Questions

How much protein do I need during menopause?

Why does menopause affect muscle mass?

What are good protein sources for a plant-based diet during menopause?

Does it matter when I eat my protein during the day?

Sources

[1] Sarcopenia: revised European consensus on definition and diagnosis

Muscle mass and strength decline with age in a process known as sarcopenia, but this decline accelerates during the menopausal transition, primarily driven by the reduction in oestrogen.
[2] nhsemployers.org

Oestrogen plays a key role in muscle energy metabolism and muscle cell function. The significant drop in oestrogen levels during menopause impairs the body's ability to maintain and build muscle mass.
[3] Dietary Reference Values. Department of Health, 'Dietary Reference Values for Food Energy and Nutrients for the United Kingdom', HMSO 1991.

The UK's Reference Nutrient Intake (RNI) for protein for adults is 0.75g of protein per kilogram of bodyweight per day. This amounts to around 45g of protein for an average 60kg woman.
[4] Dietary Protein Distribution Positively Influences 24-h Muscle Protein Synthesis in Healthy Adults

Spreading protein across meals is more effective for muscle protein synthesis than concentrating it in one sitting. Aiming for roughly 20 to 25g of protein per meal is a practical strategy.
[5] Sarcopenia and Its Association with Menopause: A Narrative Review

To preserve muscle mass and function during menopause, research suggests higher protein intake is needed, with recommendations ranging from 1.0g to 1.2g of protein per kilogram of bodyweight per day.
[6] Menopause Nutrition and Weight Gain

Protein increases satiety and protein-rich foods making up approximately one-quarter of each meal is consistent with the plate-based guidance published by the British Menopause Society.
[7] Menopause Diet – British Dietetic Association

A varied diet can meet protein needs whether eating animal products or following a plant-based approach. Animal-based sources include lean meats, fish, eggs, and dairy. Plant-based sources include beans, peas, lentils, nuts, seeds, and soya products such as tofu.