Peter Attia's stance on protein is a cornerstone of his nutritional philosophy, emphasizing its critical role in maintaining lean muscle mass, especially for longevity. He views muscle as a critical metabolic organ that becomes more difficult to maintain as we age, a process known as sarcopenia. His approach is far more aggressive than the long-standing Recommended Dietary Allowance (RDA) of 0.8 grams per kilogram of body weight, which he believes is merely enough to prevent deficiency, not to build or sustain muscle optimally.
Peter Attia's Protein Targets
For most active individuals and older adults, Attia recommends a target protein intake of 1.6 to 2.2 grams per kilogram of body weight, which translates to roughly 0.7 to 1.0 grams per pound of body weight. His personal intake, for example, has been reported to be in the range of 150 to 180 grams per day to support his active lifestyle. Attia's focus is on what is 'optimal' for healthspan, rather than merely 'adequate'.
To achieve these higher targets sustainably, Attia emphasizes the importance of strategy, which includes both the quality of protein sources and the timing of intake. He advocates for distributing protein consumption throughout the day to maximize muscle protein synthesis (MPS).
Strategic Protein Consumption
Attia's protein strategy goes beyond just a total number. It involves:
- High-quality sources: Prioritizing protein from sources with a high Protein Digestibility Corrected Amino Acid Score (PDCAAS), like lean meats, eggs, and dairy.
- Regular distribution: Spreading intake across multiple meals to consistently stimulate MPS. He has suggested aiming for 30–50 grams of protein per meal.
- Strategic supplementation: Using protein powder, particularly whey protein isolate, to conveniently meet daily targets. He noted this can be particularly useful when a large amount of protein is needed.
- Mindful fasting: Modifying his fasting protocols to avoid muscle loss. He realized extended fasts carry a risk of losing muscle mass and now favors shorter, more flexible fasting windows to support his longevity goals.
Peter Attia's Protein Recommendations vs. Standard Guidelines
| Feature | Peter Attia's Recommendation | Standard RDA | | :--- | :--- | :--- | | Recommended Intake | 1.6 to 2.2 g/kg (0.7-1.0 g/lb) of body weight | 0.8 g/kg (0.36 g/lb) of body weight | | Goal | Optimal healthspan, muscle preservation, combating sarcopenia | Basic needs and preventing deficiency | | Typical Meal Structure | Distributed throughout the day, aiming for 30–50g per meal | Not specified, can be met with varying distribution | | Context | Longevity-focused, personalized to activity and age | Population-level minimums |
How Peter Attia Manages His Protein Intake
As a practical example, Attia has mentioned his daily meal strategy for achieving his high protein targets. A typical day might include:
- Breakfast: A substantial number of eggs (e.g., eight eggs) with some toast.
- Protein Shake: A shake containing around 50 grams of protein, often with almond milk and frozen fruit, provides a concentrated protein hit.
- Jerky: He has used venison jerky sticks as a convenient, high-protein snack throughout the day.
- Lunch/Dinner: Meals that include high-quality protein sources like chicken, fish, steak, or game meat, paired with vegetables.
Attia tracks his intake using an app to ensure he consistently hits his caloric and protein goals. This attention to detail reflects his data-driven approach to health. It is important to remember that his recommendations are part of a personalized, comprehensive strategy. As he notes in his book Outlive, the optimal diet varies from person to person based on their unique metabolism, goals, and health status.
In summary, Peter Attia's protein strategy is deliberate and significantly higher than conventional wisdom suggests. It is not just about muscle building for aesthetics but about building a robust, resilient body to support a longer, healthier life by preserving muscle mass. To learn more about his approach, you can visit his official website.