For many people, 60 grams of protein per day falls short. The baseline recommendation for adults is 0.8 grams per kilogram of body weight, which means a 150-pound person needs about 55 grams and a 180-pound person needs about 65 grams just to meet the minimum. So 60 grams covers the bare minimum for smaller adults but leaves larger, older, or more active people underfed on protein.
That minimum, though, is exactly that: the floor to prevent deficiency, not the amount for optimal health. Depending on your age, activity level, and goals, you may need significantly more.
What 0.8 Grams per Kilogram Actually Means
The standard Recommended Dietary Allowance for protein is 0.8 grams per kilogram of body weight per day. A quick way to estimate your personal baseline is to multiply your weight in pounds by 0.36. For a 140-pound person, that’s about 50 grams. For a 200-pound person, it’s 72 grams. At 60 grams, you’re only meeting the RDA if you weigh roughly 165 pounds or less.
This number was set to cover the needs of most healthy, sedentary adults. It keeps your body functioning, your immune system producing antibodies, and your tissues repairing themselves at a basic level. It was never intended as a target for people who exercise regularly, are trying to lose weight, or are over 65.
When 60 Grams Isn’t Enough
Building or Maintaining Muscle
If you lift weights, play sports, or do any kind of resistance training, 60 grams is almost certainly too low. Research consistently shows that protein intake above 1.3 grams per kilogram per day leads to increased muscle mass, while intake below 1.0 grams per kilogram raises the risk of muscle loss. For a 160-pound person, that 1.3 threshold works out to about 94 grams per day, more than 50% above 60 grams.
Protein timing matters too. Spreading intake across meals appears more effective than loading it into one sitting. Studies on trained adults found that consuming about 20 grams of protein four times throughout the day stimulated more muscle repair than eating two larger 40-gram doses. If you’re only hitting 60 grams total, it becomes nearly impossible to reach that 20-gram threshold at each of three or four meals.
Losing Weight
Protein is the most filling macronutrient, which makes it critical during a calorie deficit. Higher protein intakes in the range of 1.2 to 1.6 grams per kilogram per day have been shown to preserve lean mass and improve body composition during weight loss across all age groups. For someone cutting calories at 170 pounds, that translates to roughly 93 to 124 grams daily.
At 60 grams, you’re more likely to lose muscle along with fat. That muscle loss slows your metabolism, making it harder to keep weight off long-term. Even guidelines for people with obesity specifically recommend at least 1.0 gram per kilogram during dieting to prevent medical complications.
Adults Over 65
Aging muscles become less efficient at using dietary protein, a phenomenon researchers call “anabolic resistance.” The standard 0.8 grams per kilogram recommendation stays the same regardless of age on paper, but most geriatric nutrition experts now recommend 1.0 to 1.2 grams per kilogram for older adults. For a 155-pound person over 65, that’s 70 to 85 grams per day.
Data from adults aged 55 to 85 found that those who regularly ate meals containing 30 to 45 grams of protein had the greatest leg muscle mass and strength. At 60 grams total for the day, reaching 30 grams per meal is only possible once, leaving other meals protein-poor. This uneven distribution can accelerate sarcopenia, the gradual loss of muscle that leads to frailty, falls, and fractures.
Pregnancy and Breastfeeding
Protein needs climb during pregnancy, particularly in the second and third trimesters. European nutrition authorities recommend an additional 9 grams per day in the second trimester and 28 to 31 grams per day in the third trimester on top of normal requirements. For a pregnant woman whose baseline need is already around 55 to 60 grams, that pushes the target close to 90 grams by late pregnancy. During breastfeeding, an additional 19 to 23 grams per day is recommended, putting the target at roughly 1.2 grams per kilogram. Sixty grams would leave a meaningful gap during both stages.
What Happens When Protein Stays Too Low
True protein deficiency is rare in developed countries, but chronically undereating protein relative to your needs produces real consequences. The most common early sign is gradual muscle loss, which you might notice as decreased strength or a softer body composition even without weight change. Your body breaks down muscle to access the amino acids it needs for more essential functions like immune defense and organ maintenance.
Other signs include hair that becomes brittle or starts shedding faster than normal, skin that looks pale or feels dry, slower wound healing, and getting sick more often. Protein is the raw material your body uses to build antibodies, collagen, and hemoglobin. Without enough, all three suffer. Over time, low protein can even contribute to weaker bones, since collagen is the primary protein in bone tissue and is necessary for both strength and flexibility.
Weight changes can go in either direction. Some people lose weight from overall inadequate intake. Others gain weight because muscle loss slows metabolism, and the body compensates by increasing hunger for calorie-dense foods.
Protein Source Quality Matters
Not all protein is created equal. Animal-based proteins from meat, fish, eggs, and dairy contain all the essential amino acids in proportions your body can use efficiently. They also score higher on digestibility measures, meaning more of what you eat actually gets absorbed.
Plant-based proteins from beans, lentils, tofu, and grains tend to be lower in one or more essential amino acids and are slightly less digestible. This doesn’t mean plant protein is inadequate, but it does mean that if you eat mostly or entirely plant-based, you generally need a higher total intake to get the same usable protein. Combining different plant sources throughout the day (grains with legumes, for example) helps fill amino acid gaps. If your total intake is already on the low end at 60 grams and most of it comes from plants, you’re more likely to fall short of what your muscles and tissues can actually use.
How to Figure Out Your Number
Start with your body weight in pounds and multiply by 0.36 to get the absolute minimum. Then adjust upward based on your situation:
- Sedentary adult under 65: 0.8 grams per kilogram (multiply pounds by 0.36)
- Active adult or regular exerciser: 1.2 to 1.6 grams per kilogram (multiply pounds by 0.55 to 0.73)
- Adult over 65: 1.0 to 1.2 grams per kilogram (multiply pounds by 0.45 to 0.55)
- Losing weight while preserving muscle: 1.2 to 1.6 grams per kilogram (multiply pounds by 0.55 to 0.73)
- Pregnant, third trimester: roughly 1.0 grams per kilogram (multiply pounds by 0.45)
- Breastfeeding: roughly 1.2 grams per kilogram (multiply pounds by 0.55)
For a 150-pound person, these ranges translate to about 54 grams at the low end and 110 grams at the high end. Sixty grams only clears the bar for the most sedentary, smaller adults. If you’re active, over 65, pregnant, nursing, or trying to change your body composition, you likely need to aim higher. Distributing that protein evenly across three or four meals, with at least 20 to 30 grams per sitting, will help your body make the most of what you eat.