I am often asked by clients why they are not losing weight if they aren't eating very much. Here are some answers to that question along with some solutions that may help!
⚖️ 1. Your metabolism may have slowed down. The answer is: if you’ve been eating too little for too long, your body can go into “energy conservation” mode — often called adaptive thermogenesis or “starvation mode.”
- Your basal metabolic rate (BMR) decreases, meaning you burn fewer calories at rest.
- Your body becomes more efficient at using energy, so fat loss slows dramatically.
🩺 What to do: Gradually increase calories toward a healthy maintenance level (sometimes called a reverse diet) while focusing on protein and strength training to rebuild metabolic rate.
🍽️ 2. You might be eating more than you think
When eating “hardly anything,” we often underestimate calories because:
- Small extras (milk in coffee, sauces, dressings, bites, etc.) add up.
- Portion sizes can be misleading.
- Liquid calories (juices, alcohol) are easy to overlook.
🩺 What to do: Try tracking your intake honestly for a few days using an app (like MyFitnessPal). It can be eye-opening.
💧 3. Water retention or inflammation
Your weight on the scale isn’t just fat — it also reflects water, glycogen, and digestive contents.
- Hormonal changes (especially around your cycle), high salt intake, or stress can cause fluid retention.
- Intense exercise or inadequate recovery can increase inflammation, masking fat loss temporarily.
🩺 What to do: Track your measurements and how clothes fit, not just scale weight.
🧬 4. Hormonal or medical factors
Certain conditions make fat loss much harder, even in a calorie deficit:
- Hypothyroidism (underactive thyroid)
- PCOS (polycystic ovarian syndrome)
- Insulin resistance or prediabetes
- Cortisol dysregulation from chronic stress or poor sleep
- Certain medications (antidepressants, birth control, steroids, etc.)
🩺 What to do: Ask your doctor for basic labs — thyroid panel, fasting insulin, cortisol, and sex hormones if relevant.
😴 5. Sleep and stress
High stress and poor sleep raise cortisol, which encourages fat storage (especially belly fat) and increases cravings for quick energy foods.
🩺 What to do: Prioritize 7–9 hours of good-quality sleep and include stress management — walking, yoga, journaling, or deep breathing.
🏋️ 6. Loss of muscle mass
If your calorie intake is too low and you’re not doing resistance training, you may lose muscle — which lowers your metabolism and makes weight loss harder.
🩺 What to do: Include some form of strength or resistance training and ensure enough protein (about 1 gram per pound of body weight, if possible).