For most healthy adults, a good protein goal falls between 0.6 and 1 gram per pound of body weight per day, depending on your activity level, age, and whether you’re trying to lose fat or build muscle. The official minimum, set as the Recommended Dietary Allowance, is just 0.36 grams per pound (0.8 grams per kilogram). But that number represents the bare minimum to avoid deficiency, not the amount that optimizes your health, body composition, or performance. Most people benefit from eating well above it.
The RDA Is a Floor, Not a Target
The RDA of 0.8 grams per kilogram of body weight was established to prevent protein deficiency in the general population. For a 160-pound person, that works out to about 58 grams per day. That’s roughly one chicken breast and a cup of Greek yogurt. It’s enough to keep you alive and functioning, but it’s not designed for anyone trying to build muscle, lose weight, stay strong into older age, or recover from hard training.
Think of it this way: the RDA tells you where deficiency starts. Your actual goal depends on what you’re asking your body to do.
Protein Goals by Activity Level
If you’re mostly sedentary and not trying to change your body composition, somewhere around 0.5 to 0.7 grams per pound of body weight is a reasonable daily target. That gives you a comfortable margin above the RDA without requiring much meal planning.
If you exercise regularly, especially with resistance training, your needs go up. Sports nutrition guidelines generally recommend that active people aim for 0.7 to 1 gram per pound of body weight. At the higher end of that range, you’re giving your muscles the raw material they need to repair and grow after training. A 180-pound person lifting weights three to four times a week, for example, would aim for roughly 130 to 180 grams per day.
There’s no strong evidence that going above 1 gram per pound provides additional muscle-building benefits for most people. If you overshoot slightly, your body simply uses the extra protein for energy or other metabolic processes. It won’t hurt you, but it probably won’t help either.
If You’re Trying to Lose Weight
Protein becomes even more important when you’re eating fewer calories than you burn. In a calorie deficit, your body breaks down both fat and muscle for energy. Eating more protein helps tip that balance toward fat loss while preserving lean mass. Research in animals has shown that a higher-protein diet during calorie restriction protects muscle tissue that would otherwise be lost.
Aim for the higher end of the range, around 0.8 to 1 gram per pound of body weight, when you’re actively dieting. This also helps with hunger. Protein is the most satiating nutrient, meaning it keeps you fuller longer than the same number of calories from carbs or fat. If you’ve ever noticed that a high-protein breakfast holds you until lunch while a bowl of cereal leaves you snacking by 10 a.m., that’s the effect in action.
One note of caution: if you’re in a significant calorie deficit and eating very high protein simultaneously, some animal research suggests the combination may negatively affect bone density over time. Maintaining adequate calcium and vitamin D intake, along with weight-bearing exercise, helps offset this concern.
Protein Needs After 65
As you age, your body becomes less efficient at using dietary protein to maintain muscle. This gradual loss of muscle mass, called sarcopenia, accelerates after 65 and contributes to falls, fractures, and loss of independence. The RDA doesn’t account for this shift, even though researchers have increasingly argued it should.
Current recommendations from aging-focused research suggest older adults aim for 1 to 1.2 grams per kilogram of body weight per day, which works out to roughly 0.5 to 0.55 grams per pound. For a 150-pound older adult, that’s about 68 to 82 grams daily. This is a meaningful step up from the RDA’s 55 grams for the same person and can make a real difference in maintaining strength and mobility. The one exception is people with kidney disease, who may need to limit protein intake and should work with their care team on an appropriate target.
How to Spread Protein Across the Day
Your body needs roughly 30 grams of high-quality protein in a single meal to fully switch on the muscle-building process. Below that threshold, and specifically below about 3 grams of the amino acid leucine, your body stays in a breakdown state rather than a building state. This is why eating 10 grams of protein at breakfast, 10 at lunch, and 80 at dinner is less effective than spreading your intake more evenly.
You may have heard that your body can only absorb 20 to 25 grams of protein at once, making anything beyond that “wasted.” That idea came from a 2013 study using fast-absorbing protein shakes, and it doesn’t hold up when you’re eating real food. Whole foods like meat, eggs, beans, and dairy digest more slowly, allowing your body to absorb and use larger amounts in a single sitting. So if you eat a 50-gram-protein dinner, your body will use it. You don’t need to obsessively dose protein every two hours.
That said, hitting at least 25 to 30 grams at each of three meals is a practical strategy. It ensures you cross the muscle-building threshold multiple times per day and makes it easier to reach higher daily totals without stuffing yourself at one meal.
Plant Protein vs. Animal Protein
Not all protein sources are created equal. Protein quality is measured by how well your body can digest and use the amino acids in a given food. Dairy proteins like whey score at the top of these rankings, with digestibility scores above 100 on the standard scale used by the food science community. Soy protein isolate scores well and is considered a good-quality protein. Other plant sources like pea protein concentrate and brown rice protein concentrate score lower, meaning you need to eat more of them to get the same usable amino acids.
If you eat a mix of animal and plant proteins, this mostly takes care of itself. If you’re fully plant-based, you can compensate by eating a wider variety of protein sources (combining grains, legumes, nuts, and soy throughout the day) and aiming for the higher end of the protein range. Adding an extra 10 to 20 percent to your daily target is a reasonable adjustment to account for lower digestibility scores in many plant foods.
Is Too Much Protein Dangerous?
For healthy people, high-protein diets are not known to cause medical problems. The long-standing concern about protein damaging kidneys comes from clinical observations of people who already have kidney disease. In that context, the kidneys struggle to clear the waste products of protein metabolism, and high intake can accelerate the problem. But in people with normal kidney function, there’s no convincing evidence that eating 1 gram per pound of body weight, or even somewhat above that, causes harm.
If you have kidney disease, diabetes, or another chronic condition, your protein target may need to be adjusted downward. Otherwise, the practical ceiling for most people is more about appetite and food budget than safety.
A Quick Reference by Goal
- General health, mostly sedentary: 0.5 to 0.7 grams per pound of body weight
- Regular exercise or active lifestyle: 0.7 to 0.9 grams per pound
- Muscle building or fat loss: 0.8 to 1 gram per pound
- Adults over 65: at least 0.5 to 0.55 grams per pound (1 to 1.2 g/kg)
Multiply your body weight in pounds by the appropriate range, and you have your daily target in grams. From there, divide it across your meals, aiming for at least 25 to 30 grams per sitting, and prioritize whole-food sources when possible.