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Day 2 - Article: Strong Women Need Strong Nutrition

Day 2 - Article: Strong Women Need Strong Nutrition - Merina Nutrition

Here's a question that stops most women in their tracks: how much protein do you actually eat in a day? If you're like the majority of women over 40, the answer is probably "not enough." A landmark study published in the Journal of the American Geriatrics Society in 2024 studied 4,800 women aged 45-75 and found something that should be making headlines: women who met their protein targets showed 35% better physical function scores than those who didn't.

Let that sink in. Thirty-five percent. That's not a subtle difference — that's the gap between easily carrying your groceries up the stairs and needing help. Between playing with your grandchildren and watching from the sideline.

How Much Protein Do You Actually Need?

The outdated RDA of 0.8g per kg of body weight was set decades ago based on the minimum needed to avoid deficiency — not the amount needed for optimal health. Current research consistently shows women over 40 need significantly more.

The target: 1.2 to 1.6g of protein per kilogram of body weight per day.

Here's what that looks like in real numbers:

Your Daily Protein Target

Your Weight Minimum (1.2g/kg) Optimal (1.6g/kg)
130 lbs (59 kg) 71g 94g
150 lbs (68 kg) 82g 109g
170 lbs (77 kg) 92g 123g
190 lbs (86 kg) 103g 138g

Why Women Over 40 Need More

Anabolic resistance is real. As estrogen declines during perimenopause and menopause, your body becomes less efficient at using protein to build and maintain muscle. The same amount of protein that worked at 30 simply doesn't cut it at 45. You need more to get the same muscle-building effect.

Muscle loss accelerates without intervention. Starting in your 40s, you can lose 1-2% of muscle mass per year if you're not actively working against it. That adds up fast. By 60, you could have lost 20-40% of your peak muscle mass — unless you intervene with adequate protein and resistance training.

Physical function depends on it. The JAGS study made this abundantly clear. Physical function — your ability to walk, climb stairs, carry things, and maintain independence — is directly tied to protein intake. It's not just about muscles looking toned. It's about living your life without limitations.

The Best Protein Sources

Not all protein is created equal. Here are the most efficient sources, ranked by protein per 100g:

  • Chicken breast: 31g per 100g — the gold standard for lean, complete protein
  • Turkey breast: 29g per 100g — equally excellent, slightly different amino acid profile
  • Salmon: 25g per 100g — plus omega-3s for brain and heart health
  • Greek yogurt: 10g per 100g — also delivers probiotics and calcium
  • Eggs: 6g each — the most bioavailable protein source available
  • Lentils: 9g per 100g cooked — excellent plant protein with fiber
  • Cottage cheese: 11g per 100g — casein protein for sustained amino acid release
  • Tofu: 8g per 100g — complete plant protein with isoflavones

Distribution Matters

Here's something most people get wrong: it's not just about your daily total. How you distribute protein across your meals matters significantly.

Research shows you should aim for 25-35g of protein at each meal, spread across 3-4 meals. Your body can only effectively use so much protein at once for muscle building — roughly 0.4g per kg of body weight per sitting. Loading 70g at dinner and having 10g at breakfast doesn't work as well as spreading it evenly.

A practical day might look like:

  • Breakfast: 3 eggs + Greek yogurt = 28g
  • Lunch: Chicken salad with quinoa = 35g
  • Snack: Cottage cheese with berries = 15g
  • Dinner: Salmon with vegetables = 30g
  • Total: 108g

The Strength Connection

Additional research from Sports Medicine (2024) confirms that protein alone is powerful, but protein combined with strength training is transformative. Even moderate resistance training — bodyweight squats, wall push-ups, dumbbell curls — amplifies the benefits of adequate protein intake.

You don't need a gym membership. You don't need to become a powerlifter. You need to challenge your muscles regularly and give them the protein they need to rebuild stronger.

This International Women's Day week, the most powerful thing you can do is simple: eat enough protein, move your body, and invest in your own strength. Because strong women need strong nutrition.

Quick Start: Calculate your target using the table above. Track your protein for just 3 days to see where you stand. Most women are surprised to find they're eating half of what they need.

proteinnutritionwomen over 40healthy aging