The fitness industry produces more nutrition misinformation than any other field. Keto vs low-fat. Intermittent fasting vs six meals a day. Carnivore vs plant-based. The conflicting advice is endless — and exhausting.
Here's what the evidence actually says.
The principles that have survived decades of research
1. Caloric deficit is necessary. You cannot lose fat without a caloric deficit. Everything else — macronutrient ratios, meal timing, food quality — operates within the context of this fundamental principle. Anyone selling you a fat loss system that doesn't acknowledge caloric balance is selling you fiction.
2. Protein is the most important macronutrient for body composition. Adequate protein intake preserves lean muscle mass during a caloric deficit, increases satiety, and has the highest thermic effect of food (meaning your body burns more calories digesting it). Most people eat significantly less protein than optimal. Target: 1.6–2.4g per kg of bodyweight.
3. Adherence is more important than optimisation. The "best" diet is the one you can follow consistently. A 90% adherent approach to a reasonable protocol outperforms 50% adherence to a theoretically perfect protocol every time. This is why personalisation matters so much — a plan that fits your life gets followed; one that doesn't, doesn't.
4. Sleep and stress affect fat loss directly. Chronically elevated cortisol (from poor sleep or high stress) promotes fat storage, increases hunger hormones, and reduces fat oxidation. You cannot optimise nutrition while ignoring sleep and stress — they're part of the same system.
5. Sustainable > rapid. Aggressive caloric restriction (more than 25% below maintenance) increases muscle loss, elevates cortisol, tanked training performance, and dramatically reduces adherence. The most effective fat loss rate is 0.5–1% of bodyweight per week — fast enough to produce visible results, slow enough to preserve muscle and maintain compliance.
The approaches that don't work long-term
Elimination diets. Cutting out entire food groups (carbs, dairy, gluten unless genuinely intolerant) produces initial results through water loss and restriction, then creates compliance issues that cause eventual abandonment. The weight almost always returns.
Extreme deficit approaches. 800-calorie-a-day crash diets cause dramatic muscle loss, metabolic adaptation (reducing your maintenance calories for months after), and rebound weight gain that typically results in more body fat than before you started.
Supplement-led approaches. Fat burners, meal replacements, and detox protocols produce negligible real-world results beyond the placebo effect of doing something active. There is no supplement that meaningfully replaces a caloric deficit and adequate protein.
What actually works
A personalised, evidence-based approach that:
- Establishes your individual maintenance calories (varies significantly by person)
- Creates a modest deficit (15–20% below maintenance) with adequate protein
- Builds in flexibility for social situations, travel, and high-stress periods
- Includes regular measurement and adjustment based on real-world data
- Addresses sleep and stress as integral parts of the fat loss system
This isn't exciting. It doesn't have a brand name. It won't go viral on social media. But it produces consistent, sustainable results — which is the only thing that actually matters.
At True Results, every nutrition protocol is built from these principles, personalised to your actual life, and updated weekly based on your progress data. Find out what yours would look like →
