Two levers do most of the work in protecting muscle as you get older: eating enough protein and distributing it across meals rather than stacking it at dinner, and loading the muscle regularly with resistance training. Neither substitutes for the other. Protein supplies the material, and mechanical loading is the signal that tells the body to keep the tissue.
The reason this matters on a timeline is that 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, and that most men lose about 30% of their muscle mass over a lifetime [1].
How much protein, and measured how
The daily number is a floor, not a target
The Recommended Dietary Allowance for protein, 0.8 g per kg of body weight per day, describes the quantity required to prevent deficiency in all adults, irrespective of age. In recent years several reviews and consensus statements have supported the position that this figure is insufficient to promote optimal health, and have suggested that an intake between 1.0 and 1.5 g/kg/day may confer 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 roughly 40 g of protein per day, which 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 theoretical gap. Approximately one third of adults over 50 years of age fail to meet the RDA for protein, and approximately 10% of older women fail to meet even the Estimated Average Requirement [2].
The pattern we see in clinic matches it: total calories look adequate, so protein is assumed to be adequate, and no one has actually counted.
Distribution across meals
Beyond the daily total, the meal-based number is where recent research has landed. Work on muscle protein anabolism, appetite regulation and satiety supports meeting a protein threshold of approximately 30 g per meal as a strategy for middle-aged and older adults trying to maintain muscle mass while controlling body fat [2]. The body has limited capacity to store protein from one large meal and use it later to stimulate muscle protein anabolism [2].
In practice that changes breakfast and lunch more than it changes dinner.
The training side
What a reasonable program looks like
Harvard Health describes a typical program as 8 to 10 exercises targeting all the major muscle groups, sets of 12 to 15 repetitions performed at an effort of about 5 to 7 on a 10-point scale, across two or three workouts per week. It also notes that once a routine is established, the simplest way to progress is to add a second and then a third set [1].
That is a deliberately modest prescription, and it is the right starting point for someone who has been away from resistance training 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 being a stimulus, and a program escalated too quickly gets abandoned after the first flare. The useful measure is whether you can repeat the session next week, not what the number on the bar was this week.
When joint pain is the limiting factor
Pain changes the plan before protein does
If knee, hip or shoulder pain is what is keeping you out of the gym, adjusting protein will not fix the constraint. Regen.MD evaluates the metabolic and inflammatory terrain underneath degenerative joint disease alongside the joint itself, because systemic factors change how much loading you tolerate and how quickly you recover between sessions.
That evaluation is where the honest conversation about what is actually limiting you 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 is appropriate, it is selected against imaging and examination, and for advanced knee osteoarthritis PRP is framed as a bridge therapy prior to joint replacement, not as a way to rebuild the joint surface.
Regen.MD is conservative-first. Surgery is considered only when conservative measures have been exhausted, and Dr. Gurpreet Singh Padda, MD, MBA, MHP is a surgeon, so that discussion happens within the practice rather than as a hand-off.
Build the plan around your physiology, not a generic target
Regen.MD begins with a paid, 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 (314) 295-3000 or text (314) 886-5902.
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 deficiency-prevention floor for all adults regardless of age, and several reviews and consensus statements have suggested that 1.0 to 1.5 g/kg/day may confer health benefits beyond simply meeting that minimum [2]. Which end of that range fits you is a clinical question, not a general one, and it belongs in an evaluation alongside your kidney function and your medication list. We set individual 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 literature. Reviews of muscle protein anabolism, appetite regulation and satiety support meeting a protein threshold of approximately 30 g per meal as a strategy for middle-aged and older adults concerned with maintaining muscle mass while controlling body fat [2]. The practical consequence is meal structure: a protein-light breakfast is not repaired by a protein-heavy 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, sets of 12 to 15 repetitions performed at an effort of about 5 to 7 on a 10-point scale, two or three workouts per week [1]. Consistency at that frequency matters more than the specific exercise selection, particularly if joint pain has made your schedule erratic. If pain is the limiting factor, that 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 capacity, and we do not present them that way. Where an orthobiologic is appropriate it is chosen against your imaging and examination, and for advanced knee arthritis PRP is framed as a bridge prior to joint replacement rather than 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 educational subjects. 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.
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).