Stop Undereating Protein: The 40+ Wake-Up Call

If you’re over 40+, protein is no longer about chasing muscle size.

It’s about protecting your future. Think of this as a health span savings account.

As we age, our bodies require 25–50% more protein per meal compared to someone in their 20s to stimulate the same muscle-building response. Why? Because of something called anabolic resistance — aging muscle becomes less sensitive to protein.

In your 20s:

• ~20g of protein may effectively stimulate muscle protein synthesis.

In your 40s, 50s, and beyond:

• It often takes 30–40g per meal to get that same effect.

That’s not “high protein.”
That’s age-appropriate protein.

Muscle Loss Is Real (But Preventable)

Beginning in our 30s, we can lose 3–8% of muscle mass per decade — faster after 50. Precipitous after 70.

Less muscle means:

• Slower metabolism

• Poorer blood sugar control

• Increased injury and fall risk

• Increased risk of disease

Protein + resistance training is the solution.

Protein Protects During Fat Loss

Adults 40+ often want fat loss. But if protein is too low in a calorie deficit, muscle loss accelerates.

That’s why even in a 2,100-calorie deficit framework, protein could remain as high as 120g+ per day.

Bone, Blood Sugar, and Longevity

Protein also:

• Supports bone density (bone is ~50% protein matrix)

• Improves satiety and blood sugar stability

• Reduces frailty risk long-term

For adults, it becomes the anchor macronutrient.

Practical Target for 40+

• .7-1.0g per pound (1.5-2.2g kg) of bodyweight daily (or target body weight)

• 30–40g per meal

• Spread across 3–4 meals

This often means 15–30g more per day than someone in their 20s.

This isn’t about trying to look 25 again.

It’s about protecting your “65-year-old” body.

Protein isn’t extreme.

It’s appropriate.

Jaime Rothermich, CSSD, LD, PPSC*KB, PPSC
Functional Elements Training & Nutrition
TRAIN FOR LIFE
(c) 314.518.4875
functionalelements@gmail.com
http://www.functionalelements.net

If you’re searching for evidence-based nutrition coaching and personal training in or around St. Louis, Missouri, these same principles form the foundation of the work we do every day at Functional Elements—helping adults build strength, lose weight sustainably, and improve long-term health. Check out our 14-day 360° to get you motivated, educated and aligned with the very best Functional Elements Training & Nutrition has to offer over a period of just 14 days.