Yes, you need more protein as you age. The standard recommendation for adults is 0.8 grams of protein per kilogram of body weight per day, but multiple expert groups now agree this isn’t enough once you pass 65. Healthy older adults need at least 1.0 to 1.2 g/kg per day to maintain muscle mass and physical function, and those with chronic illness or acute disease need 1.2 to 1.5 g/kg per day.
For a 160-pound (73 kg) person, that’s the difference between about 58 grams of protein a day under the old guideline and 73 to 88 grams under the updated targets. That gap matters more than it sounds, because the consequences of falling short compound over years.
Why Your Muscles Respond Differently After 65
The core reason older adults need more protein is a phenomenon called anabolic resistance. In younger people, eating a protein-rich meal triggers a strong burst of muscle-building activity. Your body breaks down dietary protein into amino acids, and those amino acids signal your muscles to repair and grow. This process keeps muscle mass relatively stable between the ages of roughly 18 and 50, assuming you’re reasonably active and eating enough.
With aging, that signal gets weaker. Your muscles become less responsive to the same amount of protein that would have triggered robust repair a decade earlier. The building side of the equation slows down while the breakdown side continues at a similar pace. Over time, this imbalance leads to a net loss of muscle. It’s not that your body stops building muscle entirely. It just needs a stronger stimulus, in the form of more protein and regular exercise, to get the same result.
This blunted response to protein is considered the primary driver behind age-related muscle loss, which affects strength, balance, mobility, and independence. It’s also why simply meeting the 0.8 g/kg guideline designed for the general adult population isn’t protective enough for people over 65.
How Much Protein You Actually Need
The PROT-AGE Study Group, an international panel focused on nutrition in aging, recommends that adults over 65 aim for 1.0 to 1.2 g/kg of body weight per day as a baseline. The European Society for Clinical Nutrition and Metabolism supports the same range for healthy older adults.
If you exercise regularly, whether that’s walking, swimming, cycling, or lifting weights, your target should be at the higher end: 1.2 g/kg or above. Exercise and protein work together to overcome anabolic resistance, and skimping on one reduces the benefit of the other.
If you’re managing a chronic condition, recovering from surgery, or dealing with an acute illness, the recommended range climbs to 1.2 to 1.5 g/kg per day. In severe cases involving malnutrition or significant inflammatory conditions, some guidelines suggest intakes up to 2.0 g/kg per day to support immune function and recovery.
Here’s what that looks like in real numbers:
- 130-pound (59 kg) person: 59 to 71 g/day if healthy, 71 to 89 g/day with chronic illness
- 160-pound (73 kg) person: 73 to 88 g/day if healthy, 88 to 110 g/day with chronic illness
- 200-pound (91 kg) person: 91 to 109 g/day if healthy, 109 to 137 g/day with chronic illness
The Frailty Connection
Getting enough protein isn’t just about keeping muscles looking full. It directly affects your risk of frailty, the clinical term for the cascade of weakness, fatigue, and slowness that can rob older adults of independence. A meta-analysis of prospective studies found that higher total protein intake was associated with a 21% lower risk of frailty compared to the lowest intake levels.
Plant protein sources showed a particularly consistent benefit, linked to a 13% lower frailty risk with moderate certainty of evidence. This doesn’t mean plant protein is superior to animal protein for muscle, but it does suggest that the overall dietary pattern matters. Getting protein from a variety of sources, including legumes, nuts, soy, dairy, eggs, fish, and meat, covers both the amino acid profile your muscles need and the broader nutritional benefits that reduce frailty risk.
Why Per-Meal Amounts Matter
Total daily protein is important, but how you distribute it across meals makes a real difference. Research consistently shows that eating 25 to 30 grams of protein per meal maximally stimulates muscle repair in both younger and older adults. This threshold is partly driven by an amino acid called leucine, which acts as the key trigger for muscle building. Older adults need roughly 3 to 4 grams of leucine per meal to flip that switch, and that corresponds to about 25 to 30 grams of high-quality protein.
The practical problem is that many older adults eat a protein-light breakfast (toast, cereal, juice), a modest lunch, and load most of their protein into dinner. That pattern means you’re only hitting the 25-gram threshold once a day. A more effective approach is spreading protein roughly evenly across three meals. Even a simple shift, like adding Greek yogurt or eggs at breakfast and including beans, cheese, or chicken at lunch, can get each meal into the effective range.
A dietary plan hitting 25 to 30 grams of high-quality protein at each of three meals lands you around 75 to 90 grams per day, which falls neatly within the recommended range for most older adults.
Exercise Amplifies the Effect
Protein alone helps, but combining higher protein intake with resistance exercise is the most effective strategy against age-related muscle loss. Both endurance activities (walking, cycling) and resistance training (weights, bands, bodyweight exercises) are recommended, and both increase your protein needs. The PROT-AGE guidelines specifically advise 1.2 g/kg per day or more for older adults who are physically active.
Exercise appears to resensitize muscles to the anabolic signal from protein. In other words, a workout partially reverses the blunted response that makes aging muscles less efficient at using dietary protein. This is why the combination of the two is consistently more effective than either one alone for maintaining strength and function.
When Higher Protein Intake Isn’t Safe
The one major exception to the “eat more protein” guidance involves kidney disease. Current guidelines advise adults with mild chronic kidney disease (stages 1 and 2) to avoid protein intakes above 1.3 g/kg per day. For people with moderate to severe kidney disease (stages 3 through 5, not on dialysis), the recommendation drops to 0.6 to 0.8 g/kg per day, which is actually below the general adult RDA.
Because kidney function naturally declines with age, and because many people have undiagnosed kidney problems, this is worth knowing about. If you’ve been told your kidney function is reduced, or if routine bloodwork has flagged any kidney markers, your protein targets will be different from the general aging recommendations. For people with healthy kidneys, research shows minimal adverse effects from protein intakes in the 1.0 to 1.5 g/kg range.
Putting It Into Practice
Hitting 25 to 30 grams of protein per meal doesn’t require protein shakes or special supplements for most people, though those can help if appetite is low. Here’s what 25 to 30 grams looks like in common foods: a palm-sized piece of chicken or fish (roughly 4 ounces cooked), one cup of Greek yogurt with a handful of nuts, three eggs with a slice of cheese, or a cup of lentils paired with a glass of milk.
Appetite often decreases with age, which is one reason many older adults fall short on protein. Prioritizing protein-rich foods at the start of each meal, before filling up on bread or salad, is a simple strategy that helps. Choosing protein-dense options over bulky, low-protein foods also makes it easier to hit your targets without needing to eat uncomfortably large portions. If chewing is difficult, soft protein sources like yogurt, eggs, fish, bean soups, and smoothies made with milk or protein powder can fill the gap.