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Why protein is the only macro that actually matters for fat loss

Published 2 days ago • 6 min read
Why Protein Is the Only Macro That Actually Matters — Fight The Weight
Fight The Weight  ·  Real Experience. Real Education. Real Results.
Fight The Weight
FTW Education Series

Why Protein Is the Only Macro
That Actually Matters
for Fat Loss

And why most women are not eating nearly enough of it — even the ones doing everything else right.

Hi Reader,

If there is one thing I could change about how women approach fat loss — it is this:

They are not eating enough protein. Not even close.

I do not say this to be critical. I say it because I see the same pattern constantly — women who are training consistently, eating carefully, doing everything they have been told to do — and still not getting the results they deserve. And in almost every case, the first thing I look at is protein.

Here is why it matters more than any other food choice you make:

When you are in a caloric deficit without enough protein, your body breaks down muscle for energy — not just fat. Less muscle means a slower metabolism. And a slower metabolism makes every future attempt at fat loss harder.

What Adequate Protein Actually Does

1

Protects your muscle during a caloric deficit

Without enough protein, your body cannibalises muscle alongside fat. Muscle is your metabolic engine — losing it slows everything down permanently.

2

Suppresses your hunger hormone more than anything else

Protein suppresses ghrelin — your hunger hormone — more effectively than carbohydrates or fat. High protein meals keep you fuller for longer, every single time.

3

Burns calories just by being digested

Your body burns 20–30% of protein calories during digestion — the thermic effect of food. No other macronutrient comes close to this. Carbs burn 5–10%. Fat burns 0–3%.

4

Supports your metabolic rate during and after fat loss

The biggest predictor of long-term fat loss maintenance is how much muscle you preserved during the process. Protein is the only thing that makes this possible.

5

Non-negotiable on GLP-1 medication

On Tirzepatide or Ozempic, appetite suppression is so strong that women often under-eat protein significantly. Without it, 25–40% of weight lost can be muscle — not fat. Protein protects against this.

Your Minimum Daily Protein Target
Body weight (kg) × 1.8 = grams per day
On GLP-1 medication: body weight × 2.0 to 2.4g per day
Absolute minimum regardless of body weight: 120g per day

This target must be hit every single day — not averaged across the week.

Simple SA Protein Sources to Hit Your Target

All values are per serving — cooked weight unless stated otherwise

Food Serving Protein
Chicken breast (cooked) 100g 31g
Lean beef mince (cooked) 100g 28g
Tuna in brine (drained) 1 tin (170g) 34g
Eggs (whole) 3 large 18g
Plain Greek yoghurt 200g 20g
Cottage cheese (low fat) 150g 16g
Biltong (beef) 30g 16g
Ostrich fillet (cooked) 100g 30g
Whey protein isolate 1 scoop (30g) 24g
The One Rule

If you only do one thing right in your nutrition — make it hitting your protein target. Every single day. Not most days. Not on average. Every day. Everything else is secondary to this.

Your Personalised Protein Target Is
Delivered Before Week 2 Starts

In the FTW 13-Week Programme, every participant receives their personalised calorie and macro targets — calculated specifically for their body weight, medical conditions, and goals — before Week 2 even begins. No guessing. No generic numbers.

Registration open 1 August.

Join the waitlist for early bird access

Programme starts 1 October 2026 · Registration closes 24 September · 20 spots only

If you have questions about your protein target, your specific medical situation, or whether this programme is right for you — reply to this email or WhatsApp me on 068 516 0140. I answer personally.

Delmarie van Zyl
Certified Fat Loss Coach · Founder, Fight The Weight

© 2026 Fight The Weight  ·  Delmarie van Zyl
www.ftw.delmarievanzyl.com  ·  @ftwcoaching  ·  068 516 0140

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Fight The Weight

Delmarie van Zyl - Certified Fat Loss Coach

For women who want to understand how their body actually works. Expect evidence-based fat loss education, hormone health, real coaching tips, and updates on the FTW 13-Week Sustainable Body Transformation Programme.

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