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A recent review argues that current protein recommendations—designed to prevent deficiency—aren't enough to support optimal health as we age. The researchers found that combining more protein with regular exercise can help preserve muscle, maintain mental sharpness, and keep you independent longer. This isn't about getting jacked; it's about extending your healthspan so you can keep doing what you love for decades more.
Evidence Assessment
Evidence Strength
Strong
Study Type
Systematic review of human studies
Confidence
High
Key Findings
- Current protein guidelines (0.8 g/kg) are based on preventing deficiency, not optimizing health or longevity.
- Eating 1.2 to 1.6 grams of protein per kilogram of body weight, combined with exercise, helps preserve muscle and brain function as you age.
- The goal isn't muscle size—it's maintaining independence and quality of life for decades longer.
Practical Takeaways
- Aim for about 1.2 to 1.6 grams of protein per kilogram of your body weight each day (e.g., 90–120g for a 170-lb person).
- Pair higher protein intake with resistance training (lifting weights, bodyweight exercises) at least twice a week for best results.
Limitations & Caveats
- Protein needs vary based on activity level, age, and health conditions like kidney disease.
- The review highlights associations, not direct cause-and-effect—other lifestyle factors matter too.