Almost every woman who sits down in my office this year has a protein number in her head. It’s really interesting to see this actually, and i’d love to share why.
Usually it is somewhere between 100 and 150 grams a day. Usually it came from a podcast, a trainer, or a social media post. And usually she is struggling to reach it, eating protein bars between meals, adding powder to her coffee, and forcing down chicken at breakfast even though she is not hungry for it.
When I ask how her digestion is, the answer is often the same: bloated, heavy after meals, constipated, or tired after lunch.
I want to be clear from the start. Protein matters. It is essential for muscle, bone, hormones, immunity, and repair, and many people, especially women in midlife and older adults, genuinely do not eat enough of it. This is not a post telling you that protein is overrated.
It is a post about a better question. Modern nutrition asks, "How much protein should I eat?" Ayurveda asks, "How much protein can this person digest, and turn into healthy tissue, under these circumstances?"
Those two questions often lead to very different numbers.
Where Do the Big Numbers Come From?
The official Recommended Dietary Allowance (RDA) for adults is 0.8 grams of protein per kilogram of body weight per day. For a 140-pound woman, that is about 51 grams.
The RDA is often misunderstood. It was set from nitrogen balance studies as the amount that meets the basic requirement of nearly all healthy adults, about 97.5 percent of them. The estimated average requirement is lower still, 0.66 grams per kilogram. In other words, the RDA was designed to prevent deficiency. It was not designed to describe the ideal intake for every person in every situation (!!!)
This is where the conversation gets more interesting, because many researchers now believe the RDA is too low for some groups. Studies using a newer measurement method, indicator amino acid oxidation, have suggested the requirement may be underestimated by roughly 30 percent. An international group of geriatric researchers, the PROT-AGE Study Group, recommends 1.0 to 1.2 grams per kilogram for healthy adults over 65, and more for those who are active or ill. For active people, the Academy of Nutrition and Dietetics and the American College of Sports Medicine have recommended roughly 1.2 to 2.0 grams per kilogram.
So where does 150 grams come from?
Most often, it comes from the popular rule of one gram of protein per pound of body weight. That works out to about 2.2 grams per kilogram, which sits at the very top of the research range. That number traces back largely to studies of people doing resistance training to build muscle.
The largest meta-analysis on this question, published in the British Journal of Sports Medicine in 2018, pooled 49 randomized trials. It found that in people who were strength training, gains in lean mass leveled off at around 1.6 grams per kilogram per day. The authors noted that the true plateau could be somewhat higher for some people, which is why 2.2 grams per kilogram is sometimes offered as a generous upper bound for those trying to maximize muscle growth.
That is a meaningful finding. But it applies to people who are lifting consistently with the goal of building muscle. It has been turned into a daily target for everyone, including women who are not training, who have sluggish digestion, or who are already eating a reasonable amount of protein.
And many are. According to national survey data, the average American woman already eats about 69 grams of protein a day, more than the RDA. Some women do fall short, particularly older women and women who eat very little. But for many women, the gap between where they are and where they are being told to be is much larger than the evidence requires.
What This Looks Like for One Woman
The “1 gram per pound” rule asks for nearly 3 times the RDA
Grams of protein per day for a 140-pound woman
For a 140-pound woman, the popular rule asks for 140 grams a day. That is about twice what the average American woman already eats, and well above what the research supports for anyone who is not strength training.
You Do Not Absorb What You Eat. You Absorb What You Digest.
This is the part of the conversation that modern protein advice almost always leaves out.
A protein target written on paper assumes that every gram eaten is broken down, absorbed, and delivered to muscle. In reality, that depends on stomach acid, pancreatic enzymes, gut health, stress, sleep, and the strength of digestion on that particular day. Protein that is not fully digested in the small intestine travels to the colon, where gut bacteria ferment it. For many people, that is where the gas, bloating, and heaviness begin.
Ayurveda describes this same principle in its own language. Charaka Samhita opens its chapter on the proper quantity of food, Matrashitiya Adhyaya (Sutra Sthana, Chapter 5), with a simple instruction: one should eat in measure, matrashi syat, and the right measure is determined by the strength of agni, the digestive fire. The text defines the proper amount of food as the amount that is digested in due time without disturbing one's health.
Notice what is not in that definition. There is no fixed number. The right amount is whatever your agni can actually transform.
Most Protein Foods Are Heavy
The same chapter divides foods into those that are naturally light (laghu) and those that are naturally heavy (guru). Among the heavy foods, Charaka lists milk and milk preparations, sesame, black gram (urad dal), and the meat of aquatic and marshy-land animals. Many of the foods we now rely on for protein fall into this category.
Charaka's guidance on heavy foods is specific. They should be eaten only to one third or one half of one's capacity. Even light foods should not be eaten in excess, because overeating weakens agni.
This is the exact opposite of what many protein plans ask people to do: eat heavy foods past the point of hunger, several times a day, to hit a number.
The classical texts are also clear that protein foods are not all the same. Mung beans (mudga) are described as light and are praised as the best among legumes. Charaka lists green gram, along with certain game birds and deer meat, among the foods that are light by nature.
When Protein Becomes Ama
When food is eaten beyond the capacity of agni, Ayurveda says it is not converted into healthy tissue. It becomes ama, the heavy, sticky, undigested residue that Charaka identifies as a root of doshic imbalance and disease (Vimana Sthana, Chapter 2).
Ayurveda also teaches that tissues are built in sequence. Digested food first nourishes rasa dhatu, the nutritive plasma, and from there the nourishment moves on to blood, and then to muscle, mamsa dhatu. Each stage depends on the one before it, and each has its own metabolic fire. Muscle is not built by protein alone. It is built by protein that has been properly digested and carried through each stage of tissue formation.
So when someone tells me they are eating 130 grams of protein a day but still feel weak, puffy, and exhausted, I do not assume they need more protein. I first want to know whether they are digesting the protein they already eat.
When More Protein Does Help
I do not want anyone to read this and conclude that they should eat less protein. For some people, eating more is exactly the right choice. The point is that the decision should be made for a reason, and the amount should be matched to what the body can use.
Older adults. The evidence here is strongest. With age, muscle becomes less responsive to protein, a phenomenon researchers call anabolic resistance. This is why the PROT-AGE group recommends at least 1.0 to 1.2 grams per kilogram for adults over 65, 1.2 or more for those who exercise, and 1.2 to 1.5 for older adults with acute or chronic illness. Many older adults, especially women who eat lightly, fall short of even the RDA.
Women in perimenopause and menopause. Falling estrogen is associated with faster loss of muscle and bone, and there are good reasons to make sure midlife women are eating enough protein. I want to be honest, though: a 2024 review of the research on postmenopausal women concluded that the evidence on exactly how much protein they need is limited and not of high quality. What we can say with confidence is that adequate protein matters most when it is combined with strength training. Protein without a reason for the muscle to grow does not build much muscle.
People who strength train. As discussed above, up to about 1.6 grams per kilogram appears useful for building muscle, with some people benefiting from more.
Recovery from illness, surgery, or injury. Needs rise during healing, and this should be guided by your physician.
Ayurveda would agree with every one of these. The classical texts have a whole category of nourishing, building therapy, brimhana, for depleted, weak, recovering, and aging bodies. But Ayurveda would add a condition: building only works if agni is strong enough to carry the nourishment into the tissues. A depleted person with weak digestion is not built up by forcing heavy food. They are built up by first restoring digestion, then increasing nourishment gradually.
Why This Matters Right Now
We are entering hemanta, the early winter season. Charaka (Sutra Sthana, Chapter 6) describes this as the time of year when agni in healthy, strong people becomes powerful and can digest heavier foods in greater quantity. The seasonal recommendations for winter include nourishing foods like dairy, meat broths, and sesame.
In other words, if there is a season to increase protein, this is it. It is also a good reminder that the right amount of protein is not one fixed number for the whole year. It shifts with the season, your age, your activity, and your digestion.
Signs Your Protein Is Outpacing Your Digestion
In practice, these are the patterns I look for when someone has increased protein faster than their agni can keep up:
Bloating, gas, or a heavy, full feeling that lasts for hours after meals
Constipation, especially when protein foods have crowded vegetables, grains, and legumes off the plate
Little or no hunger by the next meal
A thick coating on the tongue in the morning.
Feeling dull, sluggish, or sleepy after eating rather than nourished
Charaka also notes that even wholesome food in the right quantity is not properly digested when a person is affected by anxiety, fear, grief, or anger. Stress is part of this picture. A protein shake taken in a rush between meetings is not digested the same way as a calm, warm meal.
If you have persistent digestive symptoms, please see your doctor to rule out other causes. And if you have kidney disease, your protein intake should be managed with your physician. For people with healthy kidneys, a 2018 meta-analysis found that higher protein intakes did not harm kidney function, so that is not the concern I am raising here. My concern is digestion.
A Note on Protein Powders
Many people reach their targets with powders, so it is worth knowing what is in them. In October 2025, Consumer Reports tested 23 popular protein powders and shakes and found that more than two thirds contained more lead in a single serving than its experts consider safe for a full day. Plant-based powders had the highest levels, on average about nine times higher than dairy-based powders.
Consumer Reports did not say that people need to panic or throw their powders away. Its advice was that most products are fine occasionally, but it recommended against relying on them daily.
From an Ayurvedic perspective, there is a second issue. A powder is about as far from a whole, fresh food as protein can get. It is cold, dry, highly processed, and often taken on an empty stomach or in place of a meal. For someone whose digestion is already weak, it is rarely where I would start.
What I Recommend in Practice
- 01
Start with where you are
Before adding anything, look at what you already eat on a few ordinary days. Many women are closer to a reasonable intake than they think.
- 02
Use a reason, not a trend
Increase protein because of a real need, such as age, strength training, recovery, or low intake, not because of a number online. Work with your doctor or practitioner to find your range.
- 03
Match heavy foods to your digestion
Meat, dairy, and urad dal are heavy. Eat them to comfortable satisfaction, not past it. When digestion is weak, lean on lighter proteins such as mung dal and kitchari.
- 04
Spread it across meals
The old idea that the body can only use 25 to 30 grams at a time has been challenged by newer research. Still, moderate portions across the day are easier on digestion than one or two very large ones.
- 05
Cook and spice it well
Warm, well-cooked protein is easier to digest than cold or raw. Ginger, cumin, black pepper, and hing are traditionally added to legumes for this reason.
- 06
Pair protein with movement
Charaka notes that heavy foods cause harm in excess unless agni has been strengthened by physical exercise. Strength training is what gives protein a job to do.
- 07
Use powders sparingly
Whole foods first. If you use a powder, use it occasionally rather than daily, and choose brands that publish third-party testing.
- 08
Increase gradually and watch
Add protein slowly and notice your hunger, energy, elimination, and tongue. Your body will tell you whether it is using what you give it.
The Better Question
The protein conversation has become a numbers game, and like most numbers games in nutrition, it leaves out the person.
The research is real. Many people, especially older adults and women in midlife, benefit from more protein than the RDA. But the research does not say that every woman needs 150 grams a day, and it certainly does not say that protein you cannot digest will build anything.
In Ayurveda, nourishment is not measured by what goes onto the plate. It is measured by what your body can transform into healthy tissue.
If You Only Remember Five Things
The RDA of 0.8 g/kg prevents deficiency. Some people, especially older adults and those who strength train, benefit from more. More is not always better.
One gram per pound comes from muscle-building research, and it is near the top of that range, not a baseline for everyone.
You absorb what you digest. Heavy protein beyond your agni becomes ama, not muscle.
Protein builds muscle best when paired with strength training.
Early winter is the season when strong digestion can handle more nourishing food. Use it wisely.
If you have been forcing a protein target and your digestion is telling you something is off, this is exactly what we work on together. In a consultation, we look at your digestion, your constitution, your season of life, and your goals to find the amount and kind of nourishment your body can actually use.
