Walk down any supermarket aisle and it’s clear: protein is having a moment. From high-protein cereal to coffee with added collagen, the message is everywhere. But what’s behind this midlife protein push—and do people over 40 really need more?
Short answer: yes. And not just for gym-goers or bodybuilders. The science shows that after 40, protein becomes crucial for maintaining muscle, metabolism, and overall vitality. Yet many still fall short without realising.
Why Protein Becomes Essential After 40
Once people reach their forties, subtle changes start happening under the surface. These include:
Muscle Loss Accelerates
From around age 40, adults lose up to 1% of muscle mass each year. That rate can double by 60. Even those who appear fit can be affected. One 52-year-old woman—who regularly ran marathons—was shocked to discover she had lost 15% of her muscle over five years.
Hormonal Shifts Undermine Muscle Maintenance
For women, menopause causes a sharp drop in oestrogen, which affects the body’s ability to maintain muscle. For men, testosterone declines more gradually but still impacts muscle mass and strength.
Metabolism Slows
Losing muscle also slows metabolism. Since muscle tissue burns more calories at rest than fat does, less muscle means fewer calories burned daily—often leading to that familiar midlife weight creep. Protein, however, helps maintain muscle and supports appetite regulation.
How Much Protein Is Actually Needed?
Government guidelines suggest 0.75g of protein per kg of body weight daily (about 45g for a 130lb/59kg woman). But experts now say that’s far too low for anyone over 40. A more suitable range is:
1 to 1.2g of protein per kg (0.45–0.55g per lb)
For a 59kg person, that’s around 68–82g daily
Those who are active, postmenopausal, or recovering from illness may need even more.
Real-life example? One 58-year-old woman was eating around 40g of protein daily and struggled with fatigue and midsection weight gain, despite walking every day. When she doubled her protein intake—to about 80g through meals like eggs, tuna, and salmon—her energy rebounded and she lost eight pounds in three months.
Five Overlooked Signs of Low Protein
- Muscle Softness
Arms and legs that feel “doughy” despite regular workouts may point to muscle loss. - Mid-Afternoon Energy Crash
Feeling ravenous by 3PM? Breakfast may have lacked enough protein to sustain energy. - Slow Healing
Small cuts or bruises that take ages to heal? Protein supports tissue repair. - Thinning Hair
Hair that’s brittle or falling out could signal low dietary protein. - Bone Concerns
Protein is essential for bone density—just like calcium. Yet it’s rarely mentioned in the same breath.
Getting Enough Without Going Overboard
No one wants to live on shakes and chicken breasts. Fortunately, hitting protein goals doesn’t mean eating bland or boring meals.
Sample daily options include:
- Breakfast
2 eggs + ½ avocado (18g)
Greek yoghurt with walnuts & berries (20g) - Lunch
Lentil soup with a boiled egg (22g)
Tuna salad over leafy greens (30g) - Snacks
Cottage cheese with cucumber (14g)
Almonds with string cheese (10g) - Dinner
Salmon fillet with quinoa (25g + 8g)
Tofu stir-fry with edamame (28g total)
Plant-based proteins like tofu, lentils, chickpeas, tempeh, and edamame are excellent for those avoiding meat.
The Catch (Because There’s Always One)
More protein = good.
All the protein = can backfire.
• Max out at 1.6g per kg of body weight
• Spread it out—your body can’t absorb 50g in one sitting
• Hydrate like it’s your job (your kidneys will thank you)
The Takeaway
After 40, protein isn’t optional—it’s your secret weapon against flab, fatigue, and feeling “old.” But more isn’t always better—smart is better.
Start with an extra 10–15g per meal.
Lift weights twice a week.
And listen to your body.
The difference might shock you.
Bottom Line
After 40, protein isn’t just for athletes—it’s a foundation for strength, energy, metabolism, and healthy ageing. Slightly increasing intake and spreading it across the day can help preserve muscle, reduce cravings, and boost daily energy.
Small changes—like adding an egg or two at breakfast or swapping snacks for higher-protein options—can make a real difference.
