This article is for informational purposes only and does not constitute dietary or medical advice. An individual nutrition plan, especially with chronic health conditions, should be discussed with a dietitian or doctor.
A cutting diet is an eating approach aimed at losing body fat while preserving as much muscle mass as possible. The foundation is a controlled calorie deficit, but simply eating less isn't enough — the right macronutrient split and the pace of weight loss matter just as much.
How to calculate your calorie needs
The starting point is estimating your total daily energy expenditure (TDEE) — the number of calories needed to maintain current body weight at your activity level. A deficit, typically 10-20%, is then subtracted from that figure.
Example: someone with a TDEE of 2,400 kcal, applying a 15% deficit, should eat about 2,400 × 0.85 = 2,040 kcal a day. A deficit of this size allows for a loss of roughly 0.3-0.5 kg a week, considered a safe pace that's sustainable in the long run.
How to split macronutrients
- Protein — 1.6-2.2 g per kilogram of body weight a day; protects muscle mass during the deficit and increases satiety.
- Fat — at least 0.8-1 g per kilogram of body weight, essential for hormonal balance.
- Carbohydrates — whatever calories remain, adjusted to your activity level.
At 2,040 kcal and a body weight of 75 kg: protein 75 × 2 g = 150 g (600 kcal), fat 75 × 1 g = 75 g (675 kcal), leaving 765 kcal (about 191 g) for carbohydrates.
Most common cutting diet mistakes
- Too large a deficit — above 25-30% raises the risk of muscle loss, low energy, and rebound weight gain.
- Too little protein — leads to losing muscle tissue instead of fat.
- Skipping strength training — without a stimulus to preserve muscle, the body is more willing to burn muscle along with fat.
- Unrealistic expectations — losing more than 1% of body weight a week is rarely sustainable without side effects.
How long a cut should last
Too-long periods of calorie deficit (beyond a few months without a break) can slow metabolism and lead to diet fatigue. Many specialists recommend periodic diet breaks — returning to maintenance calories for 1-2 weeks every 8-12 weeks of cutting.
The role of physical activity
Strength training 2-4 times a week combined with moderate cardio helps preserve muscle mass and increases total energy expenditure, letting you eat somewhat more while maintaining the same rate of fat loss.
Calculate your daily calorie needs: Calorie calculator →
Frequently asked questions about cutting diets
What calorie deficit is safe?
A deficit of 10-20% below total daily energy expenditure is generally recommended. That level allows for gradual fat loss without excessive risk of muscle loss or a slowed metabolism.
How much protein should you eat on a cutting diet?
The recommended intake is 1.6-2.2 g of protein per kilogram of body weight a day. Higher protein intake protects muscle during a calorie deficit and increases satiety.
Do you have to count calories to lose weight?
Counting calories isn't mandatory, but it makes maintaining a controlled deficit much easier. People who prefer other methods can use portion control or the plate method instead.
Are low carbs necessary while cutting?
No. What matters is your total calorie balance and adequate protein intake, not a specific carbohydrate share. Low-carb diets work mainly because they make calorie control easier.
What is a diet break and is it needed?
A diet break is a planned pause in the calorie deficit (returning to maintenance calories for 1-2 weeks), used during longer cuts to reduce mental fatigue and metabolic slowdown.
How fast should you lose weight while cutting?
A safe pace is usually 0.3-1% of body weight per week. Faster weight loss increases the risk of muscle loss and makes it harder to keep results.
Should you eat less fat while cutting?
Fat should make up at least 0.8-1 g per kilogram of body weight, since it's essential for proper hormonal function. It's not worth cutting it below that level.
Can you build muscle while cutting?
For beginners or people returning to training after a break, this is possible to a limited extent. For advanced trainees, the priority during a deficit is usually preserving muscle rather than building it.
Why does the scale sometimes stall despite a deficit?
Body weight fluctuates day to day due to hydration, glycogen levels, and hormonal cycles. It's better to judge the trend over several weeks than to rely on single measurements.
Are supplements needed on a cutting diet?
They're not essential. A well-balanced diet can provide all the necessary nutrients. Supplements like protein powder can simply make it easier to hit your protein target.