Weight Loss for Women Over 40: Why It’s Hard & What Actually Works
- Susanne W Smith

- Jun 28
- 3 min read
Have you ever felt like your body just… changed after 40?
Suddenly, the weight doesn’t come off as easily as it used to. Your usual “healthy eating” does nothing for you. You’re more tired. Your cravings are worse. And your belly? It's the last to go.
This is normal for most women our age. You’re not lazy, and you’re not imagining it.
You’re simply over 40, and your biology has shifted.
But here’s the good news: once you understand what’s actually happening inside your body, you can work with it, not against it. And that’s exactly how you begin to lose weight—naturally, sustainably, and without burning out.
Let’s break down why weight loss becomes harder after 40 and what really works—especially for women.
🧠 What’s Going on in Your Body After 40?
Here are the real, biological reasons you're struggling—none of which are solved by low-fat diets, calorie-restricted diets or endless cardio:
1. Hormonal Shifts
Estrogen, progesterone, and even testosterone start declining.
This messes with insulin sensitivity, appetite regulation, and fat storage—especially around the midsection.
2. Increased Insulin Resistance
With age, your cells become less responsive to insulin, meaning more fat storage and more hunger.
If you’re eating 5–6 times a day, even healthy foods, you’re likely spiking insulin too often.
3. Loss of Muscle Mass
After 35, you naturally lose muscle (called sarcopenia)—unless you actively protect it.
Less muscle = slower metabolism = harder fat loss.
4. Chronic Stress + Cortisol
Women over 40 often juggle work, kids, ageing parents, and hormonal swings — this drives up cortisol.
Elevated cortisol signals your body to hold onto fat, especially belly fat.
💡 What Actually Works for Weight Loss for Women Over 40?
Here’s what doesn’t work:
❌ Starvation diets
❌ Cardio-only routines
❌ Eating every few hours
❌ Cutting all fat
Let’s flip the script.
Here’s what does work—and it’s what I coach in my fasting-based healing programs:

✅ 1. Fast to Lower Insulin and Burn Fat
Intermittent fasting is your secret weapon.
By giving your body time without food, you allow insulin levels to drop, so that your body can finally access stored fat for fuel.
Start with:
16:8 fasting (eat within an 8-hour window) and slowly increase your fasting hours
Focus on nutrient-dense meals with protein + healthy fat
Avoid snacking between meals
Fasting isn’t starvation—it’s a strategy. It trains your body to burn fat, stabilise hormones, and reduce inflammation.
✅ 2. Prioritise Protein to Preserve Muscle
You cannot afford to lose muscle after 40.
Eat at least 1.8–2.2g protein per kg of ideal body weight daily (that’s about 112–140g if your goal weight is 64kg).
Protein:
Keeps you full
Reduces cravings
Supports metabolism
Repairs your body post-fasting and training
Include: eggs, fish, poultry, sardines, Greek yoghurt, and (if vegetarian) tempeh, lentils, and protein powders.
✅ 3. Strength Train 2–4x Per Week
Your metabolism lives in your muscle tissue.
Lifting weights or using resistance bands tells your body, “This muscle is needed—don’t burn it.”
Start simple:
Squats
Push-ups
Dumbbell rows
Resistance bands
You don’t need a gym. Just consistency.
💪 Strength is your insurance policy for ageing well.

✅ 4. Reduce Cortisol with Rest, Fasting, and Breathing
Your nervous system affects your weight loss.
If you’re constantly stressed, not getting enough sleep, or overtraining, your body will hold on to fat, regardless of what you eat.
Support your stress response with:
Sleep (7–9 hours)
Fasting windows that feel good, not forced
Deep breathing or belly breathing before meals
Walking, not just intense workouts
🔄 Summary: Your Fat Loss Formula After 40
If you're over 40, here’s your new weight loss plan:
✅ Fast strategically (start with 16:8)
✅ Eat enough protein to support muscle
✅ Do strength training 2–4x per week
✅ Lower stress and optimise sleep
✅ Say goodbye to old diet myths that never worked
💬 Final Thoughts
You don’t need to suffer, starve, or shame yourself to lose weight. You need a plan that works with your hormones, your stress response, and your lifestyle, not against it.
Fasting, protein, and strength training are the formula that helps women over 40 lose weight and finally see results, feel confident in their bodies, and reclaim their energy.
✨ Want a done-for-you plan to follow?
Join my 4-Week Fasting & Healing Weight Loss Program, built for women just like you—because your biology deserves a strategy, not a quick fix.





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