Protein for women over 50: 5 things to know about muscle and menopause

1. Ageing muscle can need a stronger protein signal

Protein supplies amino acids, the building blocks used to maintain and repair muscle. Older muscle can become less responsive to the signal from a protein-containing meal. Researchers call this anabolic resistance. [1]

That is one reason expert groups recommend more dietary protein for older adults than the general adult allowance. It does not mean digestion stops working, or that continually adding more protein will continually build more muscle.

Practical takeaway: check your current intake before increasing it. If you already meet an appropriate target, another scoop may add little.

2. Menopause can change what the scales do not show

The Study of Women’s Health Across the Nation followed women through the menopause transition. Researchers found that fat gain accelerated and lean mass declined around this transition, without a corresponding acceleration in weight gain. [2]

Lean mass includes muscle, but is not a measurement of muscle alone. The study was observational, so it cannot show that eating extra protein prevents these changes.

For women approaching or moving through menopause, it is a useful reminder to pay attention to strength as well as body weight. Preserving muscle deserves a place alongside any weight-management goal.

Practical takeaway: notice how everyday tasks and strength exercises feel, rather than relying only on the number on the scales.

3. How much protein do women over 50 need?

There is no single proven protein target for every woman over 50. Official recommended intakes, older-adult expert recommendations and targets used in specific programmes answer slightly different questions. [1, 3, 4]

RDI means Recommended Dietary Intake. These are general nutrient reference values; they are not personalised targets for muscle gain, training or recovery. The examples are calculations using the published g/kg figures, not prescriptions. [3]

In September 2026, CSIRO reported that women aged 40–55 were, on average, below a 1.2 g/kg benchmark in its analysis of national nutrition survey data. That benchmark is separate from the official RDI and does not establish a universal optimum for menopause. [4]

Activity, health and recovery can change an appropriate target. An Accredited Practising Dietitian can help you decide which guidance fits your circumstances. If you have kidney disease or a prescribed protein restriction, seek individual advice before increasing your intake.

4. Build protein into the meals you already eat

Getting enough protein does not require a diet built around shakes. Eggs, dairy foods, fish, chicken, soy foods, beans and lentils can all contribute. A varied plant-based diet can also provide the amino acids you need. [5]

Try one manageable change:

• Breakfast: add Greek yoghurt or eggs to your usual meal.
• Lunch: include tofu, tuna, chicken or a substantial serving of beans or lentils.
• Dinner: make room for a protein source alongside vegetables and carbohydrates.
• If you only eat twice a day: check the protein in both meals; a protein-rich snack may help close a shortfall.

Portion sizes and product recipes vary. Use labels or a reliable food-composition resource to work out the grams of protein you actually eat.

Practical takeaway: grams of powder and grams of protein are different. A 30 g scoop containing 24 g of protein contributes 24 g towards your daily total. This is an illustrative label example.

5. Pair enough protein with strength training

Strength exercises challenge the muscles. Adequate protein supplies the building blocks that support their maintenance and repair. Food and training work together. [5]

Extra protein powder does not guarantee extra benefit. In a two-year Australian randomised trial, adding whey protein did not improve muscle mass or physical function in well-nourished women aged 70–80. Their average starting intake was already about 1.1 g/kg a day. [6]

That finding does not make protein unimportant. It shows why filling a dietary gap is a better reason to use a supplement than assuming more will always work better.

Practical takeaway: include regular strength exercises suited to your ability, and review your diet alongside them.

Common questions about protein, ageing and menopause

Do women need more protein than men?

Not automatically. Australian/NZ reference values do not assign women a higher protein intake than men. Your age, body size, activity and health are more useful starting points than a gendered marketing claim. [3]

Do women over 50 need protein powder?

No. Food can meet protein needs. A powder is a convenient option when it helps close a shortfall, rather than a requirement of ageing or menopause. [5]

Does more protein stop menopause-related muscle loss?

That has not been established as a blanket claim. Adequate protein and strength training are sensible parts of muscle care; studies of extra supplements show benefits depend on the population and context. [2, 5, 6]