Two levers do most of the work in protecting muscle as you get older. One is eating enough protein and spreading it across meals instead of piling it at dinner. The other is loading the muscle often with resistance training. Neither replaces the other. Protein supplies the material. Loading is the signal that tells the body to keep the tissue.
This matters on a timeline because the loss starts earlier than most people expect. Harvard Health reports that after age 30 you begin to lose as much as 3% to 5% of muscle mass per decade. Most men lose about 30% of their muscle mass over a lifetime [1].
How much protein do I need to protect muscle as I age?
The daily number is a floor, not a target
The Recommended Dietary Allowance (RDA) for protein is 0.8 g per kg of body weight per day. It describes the amount needed to prevent deficiency in all adults, whatever their age. In recent years several reviews and expert statements have said this figure is not enough for best health. They suggest that 1.0 to 1.5 g/kg/day may give benefits beyond meeting the minimum [2].
It helps to see what the floor looks like in food. For a 65 kg adult, the Estimated Average Requirement of 0.66 g/kg/day works out to about 40 g of protein per day. That is a smaller number than most people picture when they hear “adequate protein.” [2]
Older adults frequently fall short of even that floor
This is not a theory. About one third of adults over 50 years of age fail to meet the RDA for protein. And about 10% of older women fail to meet even the Estimated Average Requirement [2].
The pattern we see in clinic matches it. Total calories look fine, so protein is assumed to be fine, and no one has actually counted.
How much protein should I eat per meal?
Beyond the daily total, recent research has landed on a per-meal number. Studies on muscle building, appetite and fullness support getting about 30 g of protein per meal as a plan for middle-aged and older adults trying to keep muscle while controlling body fat [2]. The body can store only so much protein from one big meal to use later for building muscle [2].
In practice that changes breakfast and lunch more than it changes dinner.
How often should older adults do strength training?
What a reasonable program looks like
Harvard Health describes a typical program as 8 to 10 exercises that work all the major muscle groups. You do sets of 12 to 15 reps at an effort of about 5 to 7 on a 10-point scale, two or three times a week. Once the routine is set, the simplest way to progress is to add a second and then a third set [1].
That is a modest plan on purpose. It is the right starting point for someone who has been away from weights or who is working around a painful joint.
Progression is where most plans fail
Muscle adapts to a demand that keeps changing. A program held at the same load for a year stops pushing the muscle. A program ramped up too fast gets dropped after the first flare. The useful test is whether you can repeat the session next week, not what the number on the bar was this week.
What if joint pain keeps me from strength training?
Pain changes the plan before protein does
If knee, hip or shoulder pain is what keeps you out of the gym, adjusting protein will not fix it. Regen.MD checks the metabolic and inflammatory terrain under worn joints along with the joint itself, because whole-body factors change how much load you can handle and how fast you recover between sessions.
That evaluation is where the honest talk about what is really holding you back happens. You can read how we approach terrain-guided care before deciding whether it fits.
Orthobiologics are not a training aid
Patients sometimes ask whether an injection will let them train harder. We do not frame orthobiologics that way. Where PRP, BMAC or micro-fragmented adipose tissue fits, it is chosen based on imaging and exam. For advanced knee osteoarthritis, PRP is framed as a bridge therapy before joint replacement, not as a way to rebuild the joint surface.
Regen.MD is conservative-first. Surgery is considered only when conservative care has run out. Dr. Gurpreet Singh Padda, MD, MBA, MHP is a surgeon, so that talk happens within the practice, not as a hand-off.
For more information, get our free guide to knee pain and treatment options.
Build the plan around your physiology, not a generic target
Regen.MD begins with a physician-led Clinical Evaluation — a review of your history, imaging, and metabolic data, and a written terrain roadmap. Evaluation is contingent upon review of your data.
Regen.MD, 4477 Woodson Rd, Suite 103, St. Louis, MO 63134, next to St. Louis Lambert International Airport. Call or text us.
Frequently asked questions
I am 60. How much protein should I be eating?
The RDA of 0.8 g of protein per kg of body weight per day is the floor that prevents deficiency, for all adults regardless of age. Several reviews and expert statements suggest that 1.0 to 1.5 g/kg/day may give health benefits beyond that minimum [2]. Which end of that range fits you is a clinical question, not a general one. It belongs in an evaluation alongside your kidney function and your medicine list. We set your own targets during a review of the conditions we treat and your own history.
Is 30 grams of protein per meal a real number or a fitness myth?
It comes from the nutrition research. Reviews of muscle building, appetite and fullness support getting about 30 g of protein per meal. That suits middle-aged and older adults who want to keep muscle while controlling body fat [2]. The practical result is meal structure. A low-protein breakfast is not made up for by a high-protein dinner. The same logic sits behind the biological terrain work we publish.
How often do I need to lift?
Harvard Health describes a typical program as 8 to 10 exercises covering all the major muscle groups. You do sets of 12 to 15 reps at an effort of about 5 to 7 on a 10-point scale, two or three times a week [1]. Sticking to that schedule matters more than which exercises you pick, especially if joint pain has made your schedule uneven. If pain is what limits you, it is worth reading through the library before you change the program.
My knee hurts too much to train. Do orthobiologics fix that?
They are not a shortcut to training harder, and we do not present them that way. Where an orthobiologic fits, it is chosen based on your imaging and exam. For advanced knee arthritis, PRP is framed as a bridge before joint replacement, not as joint-surface repair. The options are described on our orthobiologics page.
Where do peptides fit into muscle preservation?
At Regen.MD, peptides are discussed as clinical and teaching topics. They are not sold. And they are not a substitute for eating enough protein and loading the muscle you are trying to keep. Our physician-directed framing is set out under peptide therapy.
How can I calculate how much protein I need to eat?
Start with your body weight in kilograms. The RDA of 0.8 g per kg per day is the floor that prevents deficiency. Several reviews and expert statements suggest 1.0 to 1.5 g per kg may do more for health. Then split the total so each meal reaches about 30 g, because the body can store only so much protein from one big dinner to use later for muscle.
Is 30 grams of protein a day too little?
For most adults, yes. Even the Estimated Average Requirement, a lower bar than the RDA, works out to about 40 g a day for a 65 kg adult. About 30 g is what the research supports at each meal, not across the whole day. And about one third of adults over 50 already fall short of the RDA without knowing it, because no one has counted.
Sources
- Harvard Health Publishing. “Preserve your muscle mass.” Harvard Men’s Health Watch, published February 19, 2016. https://www.health.harvard.edu/healthy-aging-and-longevity/preserve-your-muscle-mass (3% to 5% loss per decade after age 30; approximately 30% lifetime loss in men; 8 to 10 exercises, 12 to 15 reps, two or three workouts per week).
- Paddon-Jones D, Leidy H. “Dietary protein and muscle in older persons.” Current Opinion in Clinical Nutrition and Metabolic Care, vol. 17, 2014. https://pmc.ncbi.nlm.nih.gov/articles/PMC4162481/ (RDA of 0.8 g/kg/day; 1.0 to 1.5 g/kg/day suggested by reviews and consensus statements; one third of adults over 50 below the RDA; 10% of older women below the EAR; EAR of 0.66 g/kg/day and the 40 g/day figure for a 65 kg adult; approximately 30 g per meal threshold).