The Truth About Slowed Metabolism: How Long

You’ve been eating less, working out more, but the scale won’t budge. Maybe you’ve even gained weight, despite being in a calorie deficit. Sound familiar?

If so, your metabolism may have slowed down—not because you’re getting older, but because your body has adapted to long-term calorie restriction.

But here’s the truth: Your metabolism isn’t broken. It’s just in survival mode. And with the right approach, you can reset it and get back to burning fat efficiently.

Many women over 40 make the mistake of dieting too aggressively for too long—thinking they need to keep cutting calories to lose fat. Going as low as 1000 calories (Yikes!)

But the longer you eat too little, the more your body fights back. (And holds onto that stubborn fat out of survival…)

So let’s break down the real science behind a slow metabolism—and how to fix it.

Your metabolism is the process of turning food into energy. It’s responsible for keeping you alive, fueling your workouts, and burning calories even at rest.

1️⃣ Basal Metabolic Rate (BMR) – The calories your body burns just to stay alive (breathing, digestion, brain function, etc.).
2️⃣ Thermic Effect of Food (TEF) – Calories burned from digesting and processing food.
3️⃣ Activity Energy Expenditure (AEE) – Calories burned from exercise and daily movement (like walking, fidgeting, or standing).