Why Protein Matters More After 40

After 40, the body tends to hold onto muscle less easily than it used to. Protein is one of the nutrients your body uses to maintain that muscle, which is why it deserves more attention in midlife. This is the short explainer on why protein matters; the practical keto guide goes deeper into planning and food ideas.

What protein does in your body

• Builds and repairs tissues, including muscle
• Provides building blocks for enzymes and other compounds the body relies on
• Supports recovery after activity
• Helps meals feel satisfying, so you are less likely to go looking for a snack an hour later

Why it gets more attention after 40

Muscle mass can gradually decline with age, and muscle supports strength, balance, mobility and everyday tasks. Changes around menopause can also shift body composition. Protein can't stop those changes on its own, but adequate protein together with regular strength work is one of the most practical ways to support the muscle you have.

A simple starting habit

You don't have to start with numbers. Try including a real protein source at each meal and notice how satisfied you feel afterward. Individual needs vary with body size, activity, health and other factors. For a closer look at how much protein women over 40 may need on keto — and a protein-first way to build meals — see the full guide:

• High-Protein Keto After 40: the practical guide →

Easy ways to add protein

• Two or three eggs at breakfast instead of one
• Rotisserie chicken kept in the fridge for fast lunches
• Greek yogurt with a few berries in the afternoon
• A second serving of the main protein at dinner instead of an extra side

Pair protein with movement

Gentle strength work two or three times a week — even with body weight or light dumbbells — gives your muscles a reason to use that protein.

• Exercise on keto: a gentle, practical guide →