Why You’re Not Losing Weight After 40 (Even If You’re Eating Healthy)

In This Article, You Will Learn:

  1. Why weight loss becomes harder after 40

  2. The role of insulin resistance and hormones in weight gain

  3. How your "healthy diet" may be hurting more than helping

  4. Practical ways to reverse insulin resistance and burn fat again

  5. The Keto-Green® strategy that transforms metabolism in women over 40

If you feel like you're doing all the right things — eating clean, exercising, skipping dessert — but the scale won't budge, you're not alone. For women over 40, weight loss isn't just about willpower. It's about biology.


Many of us hit midlife and suddenly our go-to strategies stop working. We're left feeling frustrated, bloated, tired, and often blaming ourselves. But the truth is: your body is changing, and it's asking for a new approach.


"The rules for weight loss change after 40. It’s not your fault—your hormones are shifting, and so must your strategy."

What Makes Weight Loss So Hard After 40?

As women approach perimenopause and menopause, levels of estrogen, progesterone, and other key hormones begin to fluctuate. These shifts have downstream effects on how our body processes food, stores fat, and uses energy.


One major player? Insulin resistance.


When our cells stop responding to insulin efficiently, our blood sugar stays elevated longer, and our body stores more fat — especially around the belly. Even "healthy eaters" can struggle with this if their meals spike blood sugar or they snack constantly.


Add stress, poor sleep, and declining muscle mass to the mix, and it becomes a metabolic perfect storm.

The Signs of Hormonal Weight Gain
  1. You gain weight easily, especially in the belly or hips

  2. You feel tired after eating or crave sugar frequently

  3. You’re skipping meals or undereating but still gaining

  4. You wake up groggy and crash in the afternoon

  5. Your fasting glucose or A1C levels are creeping up

These symptoms often indicate your metabolism is running on the wrong fuel source — sugar, not fat. To switch gears, we must retrain the body to burn fat again.

How Your "Healthy Diet" May Be Making It Worse

Many women unknowingly sabotage their weight loss efforts by:

  1. Eating too little (slowing metabolism)

  2. Grazing all day (spiking insulin repeatedly)

  3. Relying on low-fat or carb-heavy meals

  4. Skipping meals and bingeing later

Even popular diet advice can backfire. That's why we focus on stabilizing blood sugar, supporting hormone balance, and optimizing nutrient timing.

Dr. Anna's Keto-Green® approach combines the fat-burning benefits of ketosis with alkalizing, hormone-balancing foods to support midlife metabolism.


Key features:

  1. 13–16 hours of overnight intermittent fasting

  2. Dark leafy greens and cruciferous vegetables for detox support

  3. Healthy fats like avocado, olives, and coconut oil

  4. Protein from clean animal or plant-based sources

  5. No dairy, sugar, or processed foods

This strategy not only helps reduce insulin resistance but also supports adrenal health, gut balance, and energy levels.


REAL WOMEN, REAL RESULTS


"I followed every weight loss plan and nothing worked. Once I went Keto-Green® and supported my hormones, the weight finally came off. I have energy again!" 

— TAMARA, 52


"I thought I had to eat less and work out harder. Turns out, I needed to eat smarter. This way of eating changed everything." 

— LESLIE, 47

Your 4-Week Action Plan to Reset Your Metabolism

The Bottom Line


If you’re over 40 and struggling to lose weight, it’s not about willpower. It’s about hormones. Insulin resistance, stress, and dietary imbalances can sabotage even the healthiest habits. But with the right tools, you can rebalance your body and finally see results.


You deserve to feel confident in your body again.

Back to blog

* The information provided is for educational purposes only and should not be construed as medical advice. Always consult with your healthcare professional before starting any supplement program.

1 of 3
Dr. Anna Cabeca

Dr. Anna Cabeca

Certified OB/GYN, Anti-Aging and Integrative Medicine expert and founder of The Girlfriend Doctor. During Dr. Anna’s health journey, she turned to research to create products to help thousands of women through menopause, hormones, and sexual health. She is the author of best-selling The Hormone Fix, and Keto-Green 16 and MenuPause.

Learn more about my scientific advisory board.