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Protein After 40: How to Protect Muscle in Perimenopause, Menopause & On GLP-1s

March 01, 20264 min read

Protein After 40: How to Protect Muscle in Perimenopause, Menopause & On GLP-1s

This is one of the biggest things I have to coach most of my clients on.

Not workouts.
Not cardio.
Not even calories.

Protein.

“How much protein should I be eating?”
“Am I getting enough?”
“I keep hearing I need more protein… but how?”

And lately, it’s even more specific:

“I’m in perimenopause.”
“I’m postmenopausal.”
“I’m on a GLP-1 and I’m not even hungry.”

You hear it everywhere:

Eat more protein.
Protein is critical.

Okay.

But how… if you’re not hungry?
If you feel full fast?
If you’ve never eaten that much protein before?

This is exactly where most people get stuck.

Because I coach and train a lot of women in perimenopause and menopause — and I work with many clients on GLP-1s — and this is one of the biggest missing pieces I see.

They’re under-eating protein.
They don’t realize how much they actually need.
Or they’re trying to increase it in a way that feels overwhelming and unsustainable.

So let’s break this down in a way that actually makes sense — and more importantly — feels doable.


Why Protein Becomes More Important After 40

In perimenopause and menopause, estrogen declines.

And that affects more than just your cycle.

Lower estrogen impacts:

  • Muscle retention

  • Insulin sensitivity

  • Recovery

  • Fat storage patterns

  • Bone density

At the same time, muscle loss naturally accelerates with age.

That muscle is what protects:

  • Your metabolism

  • Your blood sugar

  • Your joints

  • Your balance

  • Your independence

So when people say “eat more protein,” what they’re really saying is:

Protect your muscle.

Because if muscle drops, metabolism drops with it.

And once that happens, everything feels harder.

Fat loss.
Energy.
Strength.
Blood sugar.
Confidence.

Protein becomes less about aesthetics and more about longevity.


And Yes — Men Need to Pay Attention Too

Men aren’t immune.

Testosterone gradually declines after 40, which impacts:

  • Muscle maintenance

  • Recovery

  • Body composition

Men often eat more protein naturally, but when calories drop (especially if dieting or using GLP-1 medications), protein can fall too low without realizing it.

After 40, muscle preservation should be intentional — for everyone.


The GLP-1 Conversation (The Part No One Explains)

GLP-1 medications reduce appetite.

That’s the goal.

But here’s the problem I see:

When appetite drops, total calories drop.

And when calories drop unintentionally…

Protein drops too.

If protein intake is too low while on a GLP-1:

  • Muscle loss increases

  • Metabolism slows

  • Fat loss includes lean mass

  • “Ozempic face” becomes more likely

  • Coming off the medication becomes harder

GLP-1 + low protein + no strength training
= muscle loss.

GLP-1 + adequate protein + strength training
= fat loss while preserving muscle.

Completely different outcome.


“But I’m Not Hungry.”

This is the most common thing I hear.

“I know I need protein… I just don’t feel hungry.”

So here’s what we do instead of forcing huge meals:

  • Prioritize protein first at each meal

  • Use smaller, higher-density protein sources

  • Front-load protein earlier in the day

  • Use strategic protein supplementation

  • Eat on structure, not just hunger cues

On GLP-1s especially, waiting until you’re hungry doesn’t work.

Because sometimes… you won’t feel hungry.

That’s where structure matters.

I have clients set an alarm or timer so they eat...and help structure their meals accordingly learning our complete in 3 structure.


Practical Shifts That Work

Instead of:
A large salad with 12g protein.

Try:
4 oz chicken (28g) + vegetables.

Instead of:
3 eggs (18g).

Try:
3 eggs + egg whites (30g).

Instead of:
Skipping breakfast.

Try:
Greek yogurt + protein powder (30g).

Instead of:
Trying to jump from 50g to 130g overnight.

Increase by 3–5g per day and build gradually.

Protein doesn’t have to feel overwhelming.

It just has to be intentional.


The Bigger Picture

Protein after 40 isn’t about chasing a number.

It’s about:

  • Preserving lean mass

  • Protecting metabolism

  • Supporting blood sugar

  • Preventing frailty

  • Supporting strength training

  • Making fat loss more sustainable

Especially in:

  • Perimenopause

  • Menopause

  • Post-menopause

  • GLP-1 use

This is foundational.


Not Sure Where You’re At? Let’s Look at It.

Most people think they’re eating enough protein.

Then we track for 3–5 days… and they’re at 45–60g.

Or they’re under-eating overall.
Or fats are too high and protein is too low.
Or blood sugar is unstable.
Or hydration and minerals are off.

That’s exactly why I created the Nutrition Audit.

We don’t guess.

We look at:

  • Your actual intake

  • Protein targets based on your bodyweight and activity

  • Meal timing

  • GLP-1 considerations

  • Blood sugar patterns

  • Training support

  • Recovery and hydration

Then I give you:

  • Clear feedback

  • Personalized protein goals

  • Simple meal structure

  • Practical adjustments

  • A realistic plan that fits your life

Because adding a GLP-1, or trying to lose fat, without dialing in your foundation first?

That’s backwards.

If you want clarity on exactly how much protein YOU need — and how to implement it without feeling overwhelmed — apply for a Nutrition Audit.

Let’s build it correctly from the ground up.

Muscle protected.
Metabolism supported.
Plan personalized. 💪

Nutrition Audit

peptidesprotein GLP1protein after 40protein perimenopause
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inMotion Training Studio

Shannon Segerstrom owner of inMotion Training Studio, Personal Trainer, Holistic health Coach, Functional Nutrition and Metabolism Specialist in Bend Oregon.

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In motion training studio - bend

1279 NE 2nd St

Bend, Oregon 97701

Phone: 541-241-6989

Email: [email protected]

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