For most adults, 150 grams of protein per day is not too much. Whether it’s the right amount for you depends almost entirely on your body weight and activity level. The general threshold where protein starts being considered “excessive” is above 2 grams per kilogram of body weight per day. For a 75 kg (165-pound) person, that ceiling would be around 150 grams, meaning it sits right at the upper edge of what’s typically recommended for active individuals. For someone who weighs more or trains hard, 150 grams is comfortably within a healthy range.
How 150 Grams Compares to Guidelines
The baseline recommendation for sedentary adults is 0.8 grams of protein per kilogram of body weight. For a 165-pound person, that works out to roughly 60 grams per day. But that number represents the minimum to prevent deficiency, not the amount for optimal health. Most active people need significantly more.
People who exercise regularly generally need 1.1 to 1.5 grams per kilogram, while those who lift weights or train for endurance events need 1.2 to 1.7 grams per kilogram. Sports nutrition experts recommend 1.6 to 2.2 grams per kilogram for anyone trying to maximize muscle growth. At those levels, 150 grams of protein is a perfectly normal target for someone weighing anywhere from 68 to 95 kg (roughly 150 to 210 pounds) who exercises consistently.
Even adults over 40 who don’t exercise intensely benefit from higher protein. As muscle mass naturally declines with age, protein needs rise to about 1 to 1.2 grams per kilogram. For a 165-pound person in that age range, that translates to 75 to 90 grams per day. So 150 grams would be generous for a sedentary older adult, but not dangerous.
What “Too Much” Actually Means
Mayo Clinic Health System defines excessive protein intake as more than 2 grams per kilogram of body weight per day. To put that in perspective, 150 grams would only be excessive if you weigh less than about 75 kg (165 pounds) and are sedentary. If you weigh 200 pounds and lift weights three times a week, 150 grams is squarely in the middle of recommended ranges.
The concern with very high protein intake over long periods centers on the extra work your liver and kidneys do to process it. When your body breaks down protein, it produces ammonia as a byproduct, which the liver converts to urea for excretion through the kidneys. In healthy people, this system handles normal and moderately high protein loads without trouble. Problems typically arise only in people who already have compromised kidney function, where the added filtration workload can accelerate decline.
If your kidneys are healthy, there’s no strong evidence that protein intakes around 150 grams per day cause damage. But if you have existing kidney disease or a family history of it, the extra processing load is worth discussing with your doctor before committing to a high-protein diet long term.
The Bone Health Question
One persistent concern about high protein intake is that it leaches calcium from bones. This turns out to be mostly a misunderstanding. While higher protein intake does increase calcium in urine, this appears to be related to better calcium absorption in the gut rather than calcium being pulled from bone. Data from the International Osteoporosis Foundation shows that higher protein intakes are actually associated with greater bone mineral density, slower bone loss, and reduced hip fracture risk, as long as calcium intake is adequate.
For older adults especially, insufficient protein is a bigger threat to bone health than excess protein. A balanced diet with enough calcium alongside your protein intake supports rather than undermines your skeleton.
Your Body Can’t Use It All at Once
Even if 150 grams is a reasonable daily target, how you spread it across the day matters. Your body builds and repairs muscle most efficiently when protein is distributed evenly across meals rather than loaded into one or two large servings. Research shows that muscle protein synthesis is about 25 percent greater when protein is spread evenly throughout the day.
Each meal should ideally contain around 30 grams of high-quality protein. That’s roughly the amount needed to supply about 3 grams of leucine, the amino acid that triggers muscle building. Below that threshold, your body stays in a breakdown state rather than a repair state. So if you’re eating 150 grams per day, aiming for four or five protein-rich meals or snacks of 30 to 40 grams each is more effective than eating a massive steak at dinner and little protein the rest of the day.
What 150 Grams Looks Like in Food
Hitting 150 grams through whole foods requires some planning, but it’s not extreme. Here’s a rough sense of protein content in common foods, based on Johns Hopkins Medicine data:
- Chicken, beef, turkey, or pork: 7 grams per ounce (a 6-ounce chicken breast delivers about 42 grams)
- Eggs: 6 grams each
- Greek yogurt: 12 to 18 grams per 5-ounce serving
- Lentils: 9 grams per half cup
A sample day at 150 grams might look like three eggs and Greek yogurt at breakfast (roughly 36 grams), a chicken breast with lentils at lunch (about 51 grams), a protein shake as a snack (25 grams), and a 6-ounce serving of meat with dinner (42 grams). That lands right around 150 grams without relying heavily on supplements.
Who Should Be Cautious
For a healthy, active person weighing 150 pounds or more, 150 grams of protein per day is a reasonable and well-supported intake. It falls within established guidelines for people who exercise, lift weights, or want to preserve muscle as they age. The people who should think twice are those on the lighter side of the scale who are also sedentary, since 150 grams could push them above the 2 grams per kilogram threshold where returns diminish and the label “excessive” starts to apply. A 120-pound sedentary person, for instance, would be consuming nearly 2.8 grams per kilogram at 150 grams daily, which is well above what the body needs or efficiently uses.
People with chronic kidney disease should also be cautious with protein at this level, since their kidneys may not handle the added urea load well. For everyone else, 150 grams is a solid, evidence-backed target that supports muscle maintenance, recovery, and overall health.