Why Protein Is the Only Macro That Actually Matters — Fight The Weight

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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

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.

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.

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%.

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.

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.

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

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

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

What Adequate Protein Actually Does

Protects your muscle during a caloric deficit

Suppresses your hunger hormone more than anything else

Burns calories just by being digested

Supports your metabolic rate during and after fat loss

Non-negotiable on GLP-1 medication

Simple SA Protein Sources to Hit Your Target

Legal

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

Why Protein Is the Only MacroThat Actually Mattersfor Fat Loss

What Adequate Protein Actually Does

Protects your muscle during a caloric deficit

Suppresses your hunger hormone more than anything else

Burns calories just by being digested

Supports your metabolic rate during and after fat loss

Non-negotiable on GLP-1 medication

Simple SA Protein Sources to Hit Your Target

Your Personalised Protein Target IsDelivered Before Week 2 Starts

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

Your Personalised Protein Target Is
Delivered Before Week 2 Starts