The RDA of 0.8 g/kg is a minimum-to-prevent-deficiency number, not an optimization number. Body-composition research consistently points to 1.6–2.2 g/kg of ideal body weight for adults who want to preserve or build muscle, especially during weight loss.
Why protein matters this much
- Highest thermic effect of food — you burn 20–30% of protein calories digesting it
- Strongest satiety signal per calorie
- Required substrate for muscle protein synthesis
- Preserves lean mass during a calorie deficit
- Supports connective tissue, skin, and immune function
| Bodyweight | Daily protein (g) | Per meal (4x) |
|---|---|---|
| 140 lb / 64 kg | 100–140 g | 25–35 g |
| 170 lb / 77 kg | 125–170 g | 31–43 g |
| 200 lb / 91 kg | 145–200 g | 36–50 g |
| 240 lb / 109 kg | 175–240 g | 44–60 g |
“Nothing else in nutrition changes results as reliably as protein. Not fasting. Not carb cycling. Not the latest diet. Just protein, every meal, every day.”
“I make protein non-negotiable because it works. Once a client is consistently hitting the number, most other nutrition problems shrink dramatically — cravings drop, energy stabilizes, training recovery improves. It's the closest thing to a nutrition cheat code.”
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