Why Women Over 40 Need More Protein (And How to Get It Without Overthinking It)

At some point in your 40s or 50s, something shifts. You may be eating the same way you always have, exercising roughly the same amount — but your body is responding differently. Muscle feels harder to hold onto. Recovery takes longer. Energy is not quite what it was. For many women, one of the most underestimated pieces of the puzzle is protein.

Why Protein Needs Change After 40

For most of their lives, women are told to eat less — not more of any specific nutrient. But the research on protein and ageing tells a different story. After 40, and especially during and after menopause, several things change that make adequate protein more important than ever:

• Muscle protein synthesis slows down. Your body becomes less efficient at using dietary protein to build and repair muscle. You need more of it to get the same anabolic signal.
• Oestrogen decline accelerates muscle loss. Oestrogen supports muscle maintenance. As levels fall during perimenopause and menopause, the rate of muscle loss speeds up — and protein is one of the most important nutrients to counter this.
• Bone health becomes a priority. Protein supports collagen production, which matters for bone strength and joint health — both of which become increasingly important after 40.
• Recovery takes longer. Adequate protein speeds up muscle repair after exercise, reducing soreness and supporting consistency in training.

How Much Protein Do Women Over 40 Actually Need?

General dietary guidelines recommend around 0.8 grams of protein per kilogram of bodyweight per day — the minimum needed to prevent deficiency in a sedentary person, not the amount needed to actively maintain muscle as you age.

Most current research on women over 40 and muscle health points to a target closer to 1.2–1.6 grams per kilogram of bodyweight per day. For a 70kg woman, that means roughly 84–112 grams of protein daily — spread across meals for best absorption, since the body can only use around 30–40 grams per meal for muscle protein synthesis at a time.

Easy Ways to Hit Your Target Without Meal Prepping All Weekend

• Breakfast: 2 eggs with smoked salmon (~30g protein), or Greek yoghurt with hemp seeds and a handful of nuts (~25g)
• Lunch: A large salad with tinned tuna, chickpeas, and feta (~35g protein)
• Snack: Cottage cheese with berries, or a protein shake (~15–25g)
• Dinner: Grilled chicken, salmon, or a lentil-based dish with vegetables (~25–35g protein)

You do not need to obsess over exact numbers every day. Simply making a point of including a good protein source at every meal — and having a protein-first snack when you are hungry — will move you meaningfully in the right direction.

Protein, Menopause, and Weight Management

Women going through menopause often notice that managing weight becomes harder, even with the same habits. A higher-protein diet helps in several ways: it is more satiating (so you feel full on fewer calories), it preserves lean mass during weight loss, and it supports blood sugar stability — all of which become more significant during the hormonal shifts of perimenopause and beyond.

If you are currently using a GLP-1 medication such as Ozempic or Wegovy and eating significantly less overall, protein becomes even more critical. Protecting muscle on a reduced-calorie intake requires being intentional about every small meal.

Where to Go From Here

If you want a structured, practical approach to both nutrition and strength training in your 40s, 50s, and 60s, our Menopause Strength Blueprint includes protein targets, a high-protein example day menu, and a 3-day training plan designed around the specific needs of menopausal women.

If you are on a GLP-1 medication and want guidance managing nutrition on a lower appetite, our GLP-1 Companion guide covers protein strategies for exactly that situation, including meal mapping for days when eating feels genuinely difficult.

Both are downloadable PDFs you can start reading in minutes.

This article is for informational purposes only and is not a substitute for professional medical or nutritional advice. Always consult a qualified healthcare provider before making significant changes to your diet.