How Much Protein Do Women Over 40 Actually Need?

When I do a nutrition intake with a new client, I almost always find the same thing: they're eating somewhere between 40 and 70 grams of protein per day. Sometimes less. They think they're eating fine. They're not — at least not for the goals they've told me they have.

Protein is the one variable that, when we fix it, changes almost everything else.

The Actual Number

For most active women over 40, the target is 0.7 to 1 gram of protein per pound of bodyweight. So a 150-pound woman should be eating between 105 and 150 grams of protein per day.

That number sounds high if you're used to eating 50 grams. It is higher. That's kind of the point.

The research on protein needs has shifted significantly in the last decade. Older guidelines were built around sedentary people trying not to be deficient — not active women trying to maintain or build muscle while managing body composition. The new numbers are higher, and for good reason.

Why 40 Changes Things

After 40 — and especially in the years around perimenopause — women lose estrogen. Estrogen has a protective effect on muscle tissue. When it drops, muscle loss accelerates and the body becomes less efficient at using protein to build and repair. The technical term is anabolic resistance.

What this means practically: you need more protein to get the same muscle-building signal that you would have gotten in your 30s with less. The threshold is higher. If you're eating the same amount you've always eaten, you're likely falling short.

This isn't about bulking. It's about keeping what you have. Muscle drives metabolism. Muscle is what makes you feel strong in daily life. Muscle is the long-term investment that makes everything else — fat loss, energy, bone density — easier.

What 120 Grams of Protein Actually Looks Like

• Breakfast: 3 eggs + 1 cup Greek yogurt (30–35g)
• Lunch: 5 oz grilled chicken over salad (40g)
• Snack: cottage cheese with fruit (15–20g)
• Dinner: 5 oz salmon or lean beef (35g)

That's roughly 120 to 130 grams across four eating occasions. It's not extreme. It doesn't require protein shakes if you don't want them. It just requires that protein be the thing you build the meal around — not the side note.

The Pushback I Hear

"That's so much food." It's more food than you're used to, yes. But most clients find that when they're eating enough protein, they're actually less hungry throughout the day. Protein is the most satiating macronutrient. More protein usually means less grazing, less snacking, and less of the 9 p.m. kitchen spiral.

"I can't eat that much meat." You don't have to. Greek yogurt, cottage cheese, eggs, edamame, lentils, and protein powder all count. Mix your sources. There's no rule that says this has to be chicken and ground beef.

If there is one nutritional lever I'd pull before anything else for a woman over 40 who wants to change her body composition — it's protein. Get that number up first. Everything else becomes easier once you do.