Hunger is the number one reason people quit, not a lack of willpower. An approach you can hold for six months beats a perfect approach you hold for nine days.

The one mechanism you can't skip

To lose fat, you have to spend more energy than you take in, over an extended period. Everything else is strategy to make that bearable. No food, no fast, no magic combination gets around it.

The good news: strategy matters enormously. Two people with the same deficit can have completely different experiences.

Lever 1: protein

It's the most filling macronutrient, by a wide margin. It also costs more energy to digest than carbs or fat. And above all, it protects your muscle mass while you lose weight, which decides whether you end up leaner or just smaller.

In a deficit, raise your protein instead of cutting it: aim for around 1.8 to 2.2 g per kilo of body weight. That's often the only thing people need to change.

The full protein math is here.

Lever 2: food volume

Your stomach responds to volume as much as it does to calories. 400 calories of broccoli, zucchini and chicken breast fill a plate. 400 calories of nuts fit in one hand.

Foods with high nutrient density and low energy density:

• Vegetables of every kind, cooked or raw
• Lean meats: chicken breast, ground turkey, extra-lean beef
• White fish and seafood
• Potatoes and sweet potatoes, which are among the most filling foods per calorie
• Whole fruit rather than juice

Lever 3: a reasonable deficit

Cutting 1000 calories a day gets fast results for two weeks, then hunger, fatigue and cravings take over. A moderate deficit, on the order of 10 to 20 % below your maintenance, holds up much longer and protects muscle better.

Losing slowly is not a failure. It's the only speed that stays sustainable.

Lever 4: removing decisions

This is the most underrated lever. Most slip-ups don't happen because you're hungry, they happen because you get home at 7:30 p.m., the fridge is empty and something has to be decided.

Having meals already cooked and already portioned removes the decision at the exact moment you're least equipped to make it. That's logistics, not discipline.

What does not work long term

• Cutting out an entire food group with no medical reason: it works until it breaks down
• Detoxes and juice cleanses: what you lose is water and gut content
• Making up for a slip-up with a fasting day: it builds an unhealthy relationship with food
• Weighing yourself daily and panicking: your weight swings by 1 to 2 kg depending on hydration, salt and digestion

In short

1. A moderate deficit, not an extreme one
2. High protein, around 1.8 to 2.2 g per kilo
3. Plenty of volume: vegetables, lean meats, potatoes
4. Resistance training to keep the muscle
5. Take last-minute decisions out of the equation
6. Sleep, because a lack of sleep increases hunger

This article is informational and does not replace the advice of a dietitian or a doctor. If you have a history of eating disorders, or a medical condition, talk to a health professional before changing your diet.