Optimal Protein Intake for Healthy Aging and Muscle Maintenance in 2026

The 0.8 g per kg figure comes from studies designed to find the minimum amount needed to avoid muscle loss in young, healthy, sedentary people. It was never meant to be a target for optimal health. Think of it as the floor, not the ceiling.

After 40, the body becomes less efficient at turning dietary protein into new muscle tissue. This is sometimes called anabolic resistance: you need more protein to get the same muscle-building signal that a 25-year-old gets from less. On top of that, if you're eating at a calorie deficit, some of the protein you eat gets burned for energy instead of used for repair.

None of this means you need to panic or start drinking protein shakes. It means the practical target is a bit higher than you might have thought, and it's worth knowing what that looks like on a plate.

For a 70 kg person, 1.2 g/kg means 84 g of protein per day, and 1.6 g/kg means 112 g. Those numbers sound large until you see them broken into meals. A breakfast with two eggs and cottage cheese, a lunch with chicken and lentils, and a dinner with fish and yogurt can get you there without any powder.

When you eat less than you burn, your body needs to decide what to break down for energy. Higher protein intake tells the body to spare muscle and target fat instead. This is one of the most consistent findings in nutrition research, and it's especially relevant after 40 when muscle loss from dieting can be hard to reverse.

Eating enough protein isn't about building a physique. It's about keeping the body you already have while losing the fat you don't want.

Protein also has a higher thermic effect than fat or carbohydrates: your body burns more calories digesting it. And it's the most satiating macronutrient, meaning a meal with adequate protein keeps you full longer. Both effects make a calorie deficit easier to sustain.

The foods highest in protein per calorie are also some of the most affordable and versatile: eggs, cottage cheese, Greek yogurt, chicken breast, canned tuna, salmon, lentils, and edamame. You don't need a special diet or expensive protein powders to reach 100 to 130 g a day.

• 2 large eggs: ~12 g protein, ~140 kcal
• 150 g cottage cheese (low-fat): ~18 g protein, ~100 kcal
• 150 g chicken breast (cooked): ~35 g protein, ~165 kcal
• 100 g canned tuna in water: ~23 g protein, ~100 kcal
• 200 g cooked lentils: ~18 g protein, ~230 kcal
• 150 g Greek yogurt (plain): ~15 g protein, ~90 kcal

Combining animal and plant sources across the day gives you a complete amino acid profile without overthinking it. Lentils at lunch and chicken at dinner, with eggs at breakfast, covers the full spectrum.

Most people who start tracking protein discover the same thing: breakfast is the weak link. A bowl of oats with no protein source, or toast with jam, leaves a gap that's hard to close by dinner. Once you see the pattern, fixing it is simple.

1. 1

   Set your protein target

   Use 1.2 to 1.6 g per kg of body weight as your daily goal. If you're unsure, start with 1.2 g and adjust after two weeks.

2. 2

   Log for two weeks

   You don't need to track forever. Two weeks shows you your patterns and which meals are consistently low in protein.

3. 3

   Fix the weakest meal first

   Usually breakfast. Add eggs, cottage cheese, or Greek yogurt. One change can add 15 to 20 g to your daily total.

4. 4

   Check the weekly view

   Look at which foods contribute most of your protein. If it's only chicken, add variety to cover more amino acids.

After 60, the case for higher protein gets stronger. Sarcopenia, the gradual loss of muscle mass with age, accelerates in the sixth decade and beyond. Adequate protein combined with any form of resistance activity is the most effective way to slow it. Even walking with a weighted backpack counts.

If you eat mostly plant-based, you can still hit your targets, but it takes more planning. Plant proteins are generally less bioavailable than animal proteins, which is why some researchers suggest plant-based eaters aim for the higher end of the range, around 1.6 g/kg. Tofu, tempeh, edamame, lentils, and seitan are your best tools.

• Know your target: body weight in kg multiplied by 1.2 to 1.6
• Include a protein source at every meal, not just dinner
• If plant-based, combine legumes with grains across the day
• Add resistance activity of any kind, even bodyweight exercises at home
• Track for two weeks to find your real gaps
• If over 60, consider aiming for the higher end of the range