The Role of Protein: Myths and Facts About Dietary Protein

You’ve probably heard someone say that you can’t outtrain a bad diet or that abs are made in the kitchen. You’ve likely also heard that protein is the most important macronutrient.

There’s a lot of bad diet and fitness advice out there, but there’s also a lot of good nutrition advice available, and those statements above hold a great deal of truth. What you eat can make or break your results from training, and protein is the foundation of it all.

Most people know they need to eat protein, but a lot still get it wrong. Our fitness and nutrition experts at RAW Athletic Club are here to clarify things about this popular yet often misunderstood macronutrient.

In this article, you’ll learn about the role of protein and how much protein you actually need (not based on generic guidelines, but on the metrics that matter). We’ll also set the record straight on whether there is a difference between plant and animal protein sources, how protein timing affects results, and which common myths about dietary protein should be ignored.

How Much Protein Do You Really Need?

Protein is the building block for virtually every cell and tissue in your body, including the muscle you’re trying to build or the fat you’re trying to lose. Without enough protein, you risk breaking down lean muscle mass, stalling recovery, and feeling flat instead of defined and strong.

Protein also supports metabolic health, immune function, and long-term longevity. It doesn’t matter what your fitness goal is. Even maintenance and general health require adequate protein intake. 

While there is a bare minimum daily protein intake needed to prevent deficiency, exactly how much protein you really need depends on your goals, training intensity, body composition, age, and even your health status.

Protein Intake by Goal: General Health, Fat Loss, and Muscle Growth

Agencies such as the USDA and WHO establish general nutrition guidelines, including the recommended daily intake of calories and protein for adults; however, these guidelines are just that – general. 

These numbers are designed to provide the average person a starting point based on population-wide data. You’re not average. No one is. Your body, training intensity, goals, age, metabolism, and health status all influence the amount of protein you actually need.

And that is where it gets confusing (and complicated) because even the “ideal” protein ranges we’re about to share that are based on fitness goals, aren’t set rules.

They’re just smarter starting points that reflect what clinical research, expert consensus, and those with real-world experience believe are better ranges for people with specific fitness goals or even those who simply want to be healthy and feel their best.

Here are suggested targets for various fitness goals, along with some other factors to consider when determining your ideal protein intake.

As always, consult with your healthcare provider. While research shows high-protein diets are safe in healthy adults, very high long-term intakes may warrant occasional monitoring.

Protein Intake For General Health

The current RDA (Recommended Dietary Allowance) for protein is 0.36 grams per pound of body weight. If that sounds low, it’s because it is.

It’s not often made clear, but that number was calculated to prevent deficiency. Most nutrition experts and clinical studies suggest that a higher protein intake than what is needed to support better general health and healthy aging is beneficial.

A better target for general health (assuming you are not physically active or chasing specific fat loss or muscle-building goals) would be 0.45 to 0.55 grams per pound of body weight. Updated analyses indicate that this range is a more suitable daily intake for supporting overall physical and mental well-being.

If general health is your only goal, an easy way to set your protein baseline is to aim for protein to account for 10–35% of your total daily calories. If you don’t track calories, a simple strategy is to aim for three balanced meals with at least 25–40 grams of protein at each, and if you are still under or hungry, 1–2 snacks with 10–20 grams of protein.

A little further down, we’ll discuss the best protein sources that deliver enough per serving to be considered a true source of protein (spoiler: peanut butter and cheese don’t make the cut.)

Suggested Protein Intake For Fat Loss

Many assume that protein intake only needs to be on the higher end of suggested ranges if you are a bodybuilder, athlete, or want to pack on some serious muscle. However, it’s actually just as (if not more) important to consider increasing your protein intake if you’re dieting and your calories are below maintenance.

Not eating enough protein during a calorie deficit is a quick way to lose the wrong kind of weight. When you’re eating below maintenance, your body looks for backup fuel. Without enough protein, it won’t just burn fat; it will eventually break down muscle tissue. This means that the lower number you see on the scale might not be a victory after all. 

In addition to muscle preservation, prioritizing protein also helps you stay on track with your diet. The biggest struggle most dieters face when trying to lose weight is being hungry. Protein is more satiating, calorie for calorie, than carbohydrates or fats. You also need protein for optimal metabolic health and hormone balance, both of which play a significant role in weight-loss resistance and fat gain.

When your calorie intake is limited, you often have to make conscious decisions about where to allocate your calorie budget. It’s still important to eat carbs and fat, but if losing body fat is your goal, always prioritize protein.

Multiple clinical trials have shown that a higher-protein diet, ranging from 0.7 to 1.1 grams per pound of body weight, is significantly more effective at preserving lean mass and supporting fat loss than lower-protein diets during caloric restriction.

There are instances in a fat-loss phase where you might need even more protein than the high end of that range. If you’re already lean, prioritizing consistent resistance training, or cutting calories aggressively, you’ll likely need to increase your protein intake even more. In these cases, 1 to 1.5 grams per pound of body weight might be a better target to minimize the risk of losing muscle while dropping fat.

If you want a safe starting point for determining how much protein to eat while trying to lose weight, most nutrition coaches and certified personal trainers recommend that their fat-loss clients start with 1 gram of protein per pound of their goal body weight. It’s an easy number to calculate and remember, works well for most active adults, and leaves room to adjust based on how your body responds.

Suggested Protein Intake For Muscle Gain

It’s not hype. It’s science. If you want to gain muscle, you have to eat enough protein. Well, technically, you need adequate protein combined with resistance training (bonus if your plan includes advanced training techniques).

Muscle growth requires both consistent resistance training and enough protein to support it. Where things get opinionated is how much protein you actually need to gain muscle.

As previously mentioned, most meta-analyses support a range of 0.7 to 1 gram of protein per pound of body weight per day as a solid range for maximizing muscle protein synthesis and hypertrophy. However, if you ask a seasoned bodybuilder or many expert personal trainers, they might tell you 1 gram per pound of body weight is the absolute minimum necessary for muscle growth and will advise eating 1.5 to 2+ grams of protein per pound of body weight daily if you are serious about packing on size.

It’s honestly hard to say who is “right.” While most research shows no consistent performance or muscle gain advantage beyond ~1 gram for most adults who resistance train, there are plenty of nutritionists, fitness coaches, and experienced lifters with insane physiques who swear that higher protein intake is what helps them or their clients reach their goals. 

Eating up to 1.5 or even 2 grams per pound isn’t generally harmful to healthy adults, so our advice is to start with a minimum of 1 gram per pound of body weight per day. Pay attention to how you feel and your progress. If you’re not progressing as expected, bump it up a little, continue monitoring for a couple of months, and go from there.

It’s also worth mentioning that you may not need more protein; you might simply need to adjust your protein timing. We’ll discuss this in more detail later, but if you’re not progressing or don’t feel fully recovered after workouts, it may be due to a protein timing or distribution issue.

For more in-depth information on diet during a muscle-building phase, read “Nutrition for Muscle Gain: What to Eat Before and After Workouts.”

Other Important Considerations for Protein Intake 

In addition to your health and fitness goals, several personal factors can influence the amount of protein your body actually needs each day. 

Some might include:

Age

As we age, our bodies become less efficient at turning dietary protein into muscle and recovery support (a process known as anabolic resistance). Studies have linked higher protein intake to better muscle preservation, increased strength, improved functional mobility, and a lower risk of falls with age.

If you’re 40 or older, you should consider aiming for the higher end of the range that best supports your goals. Most experts recommend 0.45 to 0.7 grams per pound of body weight daily for individuals aged 40 and above. For individuals 60 years or older or those experiencing early sarcopenia, protein needs may be even higher (approximately 0.7 to 1.0 grams per pound), particularly if the person is resistance training.

For more tips on exercise as you get older, read “Aging and Exercise: Fitness Tips for As You Get Older.”

Body Weight / Body Composition

Your body weight matters when calculating protein needs, but using your total weight alone doesn’t always give an accurate number, especially if you have a higher body fat percentage or are working on fat loss.

One reason is that the number on the scale doesn’t tell you how much of your weight is muscle versus fat. Two people can weigh the same but have very different body compositions, which means their protein needs won’t be the same.

Protein requirements are often better estimated based on goal weight or how much lean tissue you have (muscle, bone, organs), rather than total body weight, since fat mass has little to no protein demand.

How to estimate lean body mass

If you know your body fat percentage, use this simple formula:

  • Lean Body Mass = Body Weight × (1 – Body Fat %)

 Example:

  • 180 lbs at 25% body fat → 180 × 0.75 = 135 lbs lean mass

If you don’t know your body fat percentage, using your goal weight is a practical second option, as long as that number is realistic for your build, health status, and lifestyle.

Or, you can work with a certified personal trainer who can use skinfold calipers or suggest body scans that not only estimate your body fat percentage, but also calculate lean mass and ideal protein targets for you.

Certain Health Conditions

There are certain health conditions where higher protein intake may not be suitable without medical guidance. There are also some health scenarios in which higher protein intake may be beneficial.

Examples that MAY REQUIRE LOWER PROTEIN INTAKE include:

  • Chronic Kidney Disease (CKD): In individuals with CKD, the kidneys may struggle to filter protein waste products effectively. In these cases, physicians often recommend lower protein intake to reduce kidney workload and slow disease progression. If you’ve been diagnosed with any stage of kidney disease, protein intake should be discussed with a nephrologist or clinical dietitian.
  • Liver Dysfunction: Advanced liver disease (such as cirrhosis or hepatic encephalopathy) can impair the body’s ability to process protein properly. While protein restriction isn’t always necessary, intake often needs to be carefully managed under medical supervision to avoid complications.
  • Certain Metabolic Disorders: Rare genetic or metabolic conditions (like phenylketonuria or maple syrup urine disease) may require highly specific protein restrictions.

Examples that may BENEFIT FROM HIGHER PROTEIN INTAKE include:

  • Perimenopause and Menopause: Women in perimenopause and menopause may benefit from higher-protein diets to combat age-related muscle loss, support bone health, and help manage body composition changes driven by hormonal shifts.
  • Injury Recovery or Post-Surgery: Higher protein supports tissue repair, reduces recovery time, and helps preserve lean mass when mobility is limited. Many nutritionists and doctors recommend increasing protein intake during periods of acute recovery, especially after orthopedic surgery, wounds, or burns.
  • Post-Bariatric Surgery: Patients who’ve had gastric bypass or sleeve surgery are often advised to follow a high-protein diet (sometimes up to 1.5 g/kg or more) to support healing, prevent muscle loss, and help with satiety due to limited food volume.
  • Hospitalization or Chronic Illness: Conditions that cause systemic inflammation, prolonged bed rest, or weight loss (e.g., cancer, HIV/AIDS, COPD) may increase protein needs to prevent muscle wasting.
  • Sarcopenia or Frailty in Older Adults: Patients diagnosed with sarcopenia or age-related muscle loss are often advised to increase protein to 1.2–1.5 g/kg or more, especially when paired with resistance exercise.
  • Type 2 Diabetes or Insulin Resistance (in some cases): While not universally recommended, some studies suggest higher-protein diets may help with satiety and blood sugar regulation in people with insulin resistance or metabolic syndrome.

When Taking Certain Medications

Some medications require caution when it comes to protein intake. In some instances, protein may need to be limited to prevent added stress on vital organs or to avoid adverse interactions.

On the other hand, some medications may actually increase your body’s protein needs due to their effects on tissue breakdown, immune function, or nutrient absorption.

Examples where protein may need to be LIMITED:

  • Diuretics
  • ACE inhibitors
  • Drugs that affect kidney function

Examples where protein needs may INCREASE:

  • Corticosteroids (like prednisone)
  • Chemotherapy agents
  • Immunosuppressants
  • GLP-1 receptor agonists (semaglutide or tirzepatide)

If you’re taking any long-term prescription, over-the-counter drug, or even an herbal supplement, don’t guess. Talk to a qualified healthcare provider before making major changes to your diet or protein intake.

Pregnancy/Breastfeeding

Protein needs increase during both pregnancy and lactation to support fetal development, milk production, and maternal recovery.

Always consult your OBGYN for individual guidance, but current recommendations suggest aiming for approximately 0.7 to 0.8 grams per pound of body weight per day during pregnancy and slightly higher (closer to 0.8 to 0.9 grams per pound) while breastfeeding.

Training Style

How you train can impact your protein needs. For example, if your exercise regimen is primarily low-to-moderate intensity cardio-based or yoga, your protein needs might be average.

However, if you are weightlifting, powerlifting, doing periodization training, training twice a day, or engaging in any type of high-frequency programming, it increases protein requirements because nutrient turnover and utilization are higher.

Bottom Line: When it comes to how much protein you should eat, there’s no one-size-fits-all number. Determining your exact protein needs depends on several factors, including your goals, body composition, activity level, training style, age, health status, and more. 

Ideally, you’d work with a nutritionist, personal trainer, or qualified fitness coach who can assess your needs, provide you with an optimal starting point, and adjust your nutrition plan as needed. 

If that isn’t possible, we recommend focusing on lean body mass or your goal weight when calculating protein intake rather than total weight. From there, listen to your body. Some people perform and recover better on higher-protein diets, while others feel stronger and more energized with higher carbs and moderate protein.

The Best Protein Sources: What Foods Are Actually High in Protein?

Most people know that meat is rich in protein. Bison, chicken breast, lean turkey, lean beef, fish, and pork are all excellent sources of protein, with most options delivering about 20+ grams of protein per 4-ounce cooked serving.

Meat is just one source of protein. Eggs, Greek yogurt, cottage cheese, whey protein, and even tofu all contain a substantial amount of protein per serving. 

However, there are also plenty of foods that sound like good protein sources but aren’t. 

  • Peanut butter? Mostly fat.
  • Quinoa? Mostly carbs.
  • Oatmeal? A little protein and a great source of fiber, but more than triple the carbs.

Even many popular “protein” bars and shakes fall short, with many only having 10 grams of protein or less, and most calories coming from carbs, sugar, or fat. Unless a bar or shake has 15–20 grams of protein, it’s not a good source of protein. 

These foods can still be part of a healthy diet and contribute to your protein target; however, they are not good sources of protein.

How to Tell if a Food is a Good Source of Protein

The simple way to know if a food is a protein source is to read the label. Is protein the dominant macronutrient? If so, it’s probably a good source of protein. If fat or carbs make up the majority of calories, it’s probably not.

If you want to get a little more technical, it’s generally advised that protein calories should make up at least 50% of the total calories in that food. To figure that out, here is an easy formula that many nutritionists use that you can follow. 

All it takes is a little math…

  • Multiply grams of protein × 4 (calories per gram)
  • Divide that number by the total calories per serving

If it’s over 50%, it’s likely a solid protein source. If the number is below 0.5 (or 50%), it’s probably not worth counting as a true protein source.

For example:

  • 20g protein × 4 = 80 calories from protein
  • Total calories = 120
  • 80 ÷ 120 = 0.66 (or 66%) → That is over 50% and would qualify as a good protein source.

Protein “Quality” Matters Too

In nutrition research, protein quality doesn’t refer to whether it’s organic, pasture-raised, or hormone-free. It refers to how well a protein source supports the body’s amino acid needs, especially for muscle growth and maintenance.

So, in this context, to be considered high quality, a protein source should be complete, meaning it contains all nine essential amino acids (EAAs) in sufficient amounts. If a food is missing one or more EAA or contains them in such low quantities that they don’t effectively support muscle protein synthesis on their own, these are incomplete proteins. 

Incomplete proteins can still play a role in a solid nutrition plan, but you need to be intentional about combining them or supplementing them with complete protein sources. Otherwise, you risk falling short on the key amino acids your body needs to build, repair, and maintain muscle.

Here are a few examples of complete protein vs incomplete protein sources:

  • Complete proteins: Chicken, eggs, fish, some dairy (Greek yogurt, cottage cheese), whey, casein, and some soy.
  • Incomplete proteins: Collagen (missing tryptophan), most grains, legumes, nuts, nut butters, and many plant-based protein powders, shakes, or bars. 

As you can see, incomplete proteins are most commonly found in plant-based sources, which is why you might hear nutrition experts caution vegans and plant-based eaters to be more intentional about how they structure their meals.

Without combining complementary proteins or supplementing with complete sources, it’s easy to miss key amino acids that support muscle maintenance, recovery, and metabolic health.

Which brings us to a very popular (and somewhat controversial) question: Which is better, plant or animal protein? And is one really better than the other for muscle growth, fat loss, or recovery?

Plant vs. Animal Protein Sources

Animal-based proteins, such as meat, eggs, dairy, and most whey protein powders, are complete proteins. They naturally contain all nine essential amino acids in the proper ratios your body needs for muscle repair, recovery, and growth.

On the other hand, many plant-based protein sources are incomplete proteins. That means they’re low in one or more essential amino acids. Alone, they don’t deliver what your body needs for optimal protein synthesis.

Examples of incomplete plant proteins:

  • Pea protein (low in methionine)
  • Rice protein (low in lysine)
  • Hemp protein (low in lysine and leucine)
  • Nuts, seeds, legumes, and most grains, such as oats, wheat, and rice (however, quinoa is a complete protein)

Are there ever scenarios where plant-based protein can be complete? Yes, but not always.

For example, soy (commonly found in products such as tofu, edamame, tempeh, and soy milk) is considered a complete protein. However, some processed soy products, such as soy protein isolate, may not be complete proteins.

This is also true for any single-ingredient vegan or plant-based protein powders (like just pea protein or just brown rice protein). Most plant-based protein supplements contain only one plant-based protein source and are considered incomplete unless the label clearly states that they have been fortified or combined with others. 

However, a plant-based protein supplement can be a complete protein if it contains multiple sources to create a complete amino acid profile. For example, a blend of pea and rice protein is often used to balance out what each lacks. These combo formulas are designed to mimic the completeness of something like whey or casein protein.

The same rule applies to plant-based whole foods. Most whole plant foods, like beans, grains, nuts, and seeds, are incomplete on their own. But when eaten in variety (think rice and beans or lentils and quinoa), they can complement each other and meet your amino acid needs.

Bottom Line: Animal proteins are known to be more bioavailable, more complete, and more efficient for muscle recovery and growth. But that doesn’t necessarily mean plant protein is “better” than plant-based protein.

Read labels, understand what you’re actually getting, and don’t assume that “protein” automatically means “complete.” With smart planning and the right combinations, plant-based protein can also be a complete protein source.

The Importance of Protein Timing and Meal Distribution

If you think there are a lot of different opinions on how much protein you should eat, try asking someone if you must have a protein shake the second you finish your last set at the gym, or if there is a “cap” to how much protein your body can absorb and utilize at each meal.

There’s a lot of opinion and confusion around how to split it up and when to eat it. Here’s what the research (and real-world experience) actually shows.

Is There a Limit to How Much Protein You Can Use at One Time?

How much protein your body “can use” per meal is also a hotly debated subject.

Some studies suggest that the body can only absorb or utilize approximately 30-40 grams of protein at a time, and any amount exceeding that is considered “wasted.” This led to a wave of nutrition advice suggesting people lower their protein intake at meals or eat smaller, more frequent protein meals throughout the day.

While there are advantages to eating smaller meals for digestion and possibly even blood sugar control or appetite regulation, many nutrition experts questioned the idea that eating a meal with more than 30 grams of protein is wasted, especially considering studies were showing that people in a calorie deficit, or those engaging in intense resistance training, may benefit from meals containing high protein.

Now, it’s not just theory. New research suggests that the body doesn’t “waste” protein in excess of 30 grams, not just for dieters. In a recent study, participants consumed a single meal with 100 grams of protein. The result? Their bodies didn’t waste it. The amino acids were absorbed and utilized over a longer period, contributing to muscle protein synthesis (MPS) and recovery over time.

Bottom Line: More studies are needed to confirm either theory, but it seems your body is smarter than old-school nutrition myths give it credit for. It doesn’t seem to discard what it doesn’t use immediately. It digests, stores, and uses it as needed.

Instead of stressing over an upper protein limit per meal, focus on hitting your daily protein target and being strategic about when you eat it.

Does Protein Timing Matter? 

Now that you know a bigger meal with 40 or even 60+ grams of protein probably won’t go to waste, let’s talk about how to time it for the best results.

For most people trying to gain muscle or preserve it during fat loss, spacing protein across 3 to 5 meals per day (with at least 25 to 40 grams in each) is a smart baseline. However, there are moments when timing could potentially matter more.

There are many strategies to make your workouts more effective, but post-workout is one time when you might want to strategically time your protein intake.

Resistance training causes microtears in muscle tissue, increasing the body’s demand for amino acids. Protein supports recovery, helps rebuild muscle, and can reduce post-exercise soreness.

It makes sense that you would want to replenish those aminos with a complete protein source and shift your body into repair mode. The question is, how soon? 

Do You Need to Eat Protein Immediately After a Workout?

There is a well-known theory that you must consume protein immediately after your workout to avoid missing out on a crucial muscle-building window known as the “anabolic window.” Some say you’ve only got 30 minutes, or you’ll miss your opportunity to optimize muscle repair.

There is indeed an anabolic window, but it might not be as short as some believe. Newer studies suggest that muscle protein synthesis remains elevated for several hours after a workout, especially if you had a pre-workout meal containing protein.

So what does this mean for you?

If it’s been several hours since your last meal, aim to get a full serving of a complete protein within 60 to 90 minutes after training. If you had a solid pre-workout meal with protein, your body likely has what it needs to start the repair process, giving you more flexibility post-workout.

Bottom line: The “anabolic window” is real, but it’s not a ticking time bomb. You don’t need to slam a protein shake the second you finish your last rep. But the sooner you get that protein in, the better your results will be.

This leads us to another popular question. Does the post-workout source need to be a protein powder supplement, or is whole food just as effective? And if a protein powder is better, does it need to be a specific type, like whey isolate? 

What’s the Best Post-Workout Protein Source?

We could get into the many conflicting studies and opinions surrounding this question. Some state that whole-food meals are just as effective, especially if eaten within a reasonable post-workout window. Others say a protein shake (especially a fast-acting whey isolate) is better for maximizing muscle protein synthesis.

To keep it simple, just make sure you eat a full serving of complete protein as soon as possible after training. This could be whole foods like chicken, lean beef, fish, or eggs. Or, if you’re short on time, don’t have a big appetite after a lift, or are just sick of eating meat, a protein shake is a fast and convenient option.

That said, if you do prefer a protein shake post-workout and want to tap into what some believe to be the “best” source of protein after a resistance training session, use a whey isolate protein.

Whey isolate is considered by many to be the gold standard for post-workout protein because it is digested and absorbed quickly, allowing amino acids to enter the bloodstream faster and initiate the muscle repair process instantly. It’s also low in fat, lactose-free, and has a high leucine content (one of the key amino acids that stimulates muscle protein synthesis.)

Bottom Line: There is good, better, and best. 

You don’t need to stress about perfection; just keep in the back of your mind that when it comes to nutrition timing and distribution, there is good, better, and best.

  • Good: At the end of the day, you hit your total daily protein target. It doesn’t matter if you ate two meals or five, or whether you ate right after training or a couple of hours later.
  • Better: You hit your protein goal and space it evenly across three to five meals, with at least 25 to 40 grams in each. You also get a full serving of a complete protein post-workout within the anabolic window.
  • Best: You do all of the above. You hit your daily goal, spread it out across the day, and as part of your post-workout routine, you get in a fast-acting protein (like a whey isolate shake) within 30 to 60 minutes after training to maximize recovery.

Bonus Tip: Carbs are important post-workout, too. Your body uses carbohydrates to replenish muscle glycogen and aid recovery. Therefore, your post-workout meal should ideally include both protein and carbs.

Some believe the carb source should also be fast-digesting to help spike insulin and enhance nutrient delivery. Whole food options include white rice, potatoes, or fruit. There are also fast-acting carb supplements you can add to your protein shake that have scientifically optimized carb blends and ratios (our favorite is RAW Fuel). 

Debunking Common Protein Myths

Just as there are countless opinions on how much protein to eat and when to eat it, there are plenty of myths floating around about dietary protein.

Here are a few of the most common ones with evidence-backed clarity.

MYTH: High-Protein Diets Harm Your Kidneys

FACT: This myth has been thoroughly debunked in healthy individuals. Multiple studies show that protein intakes well above the RDA increase kidney filtration (eGFR), but do not impair kidney function or cause damage in healthy adults.

The population that needs to be most cautious is those with pre-existing kidney disease, where protein restriction may be medically advised. According to the National Kidney Foundation (NKF), a low-protein diet is only recommended for people with chronic kidney disease who are not on dialysis.

But for healthy, active people (especially those training hard), higher protein intake is not generally harmful. That said, if you plan to have very high protein intake long-term, it’s smart to check in with your healthcare provider and ensure your kidney markers stay within a healthy range, especially if you have any underlying risk factors.

MYTH: Excess Protein Causes Bone Loss

FACT: Older research suggested that a high-protein diet might increase calcium loss and weaken bones. But this has been disproven by other researchers.

More recent and comprehensive studies show that higher protein intake, especially when paired with adequate calcium, actually supports bone health by increasing calcium absorption and promoting greater bone mineral density. In fact, inadequate protein intake may be a bigger concern for bone health, especially in aging adults.

MYTH: Protein Needs Vary Based on Gender

FACT: Recommendations are based on body weight, not gender. When scaled to size, men and women respond similarly to protein intake. Men often need more total protein because they have higher lean mass, but the per-pound guideline applies equally.

Some evidence suggests that women may experience slightly higher protein oxidation during the luteal phase of their menstrual cycle, which can modestly increase their protein needs during that time; however, generalized intake guidelines remain the same.

MYTH: You Can’t Build Muscle on a Vegan Diet

FACT: It might take a bit more planning, but as long as you combine complementary sources or include fortified/high-quality plant proteins to ensure you are getting complete protein sources, you can absolutely build muscle without meat. Many elite plant‑based athletes and coaches have proven that you can build muscle and recover well using an entirely plant-based diet.

MYTH: Overeating Protein Is What’s Making People Fat

FACT: This claim often originates from anti-protein social media influencers with no credentials, just opinions. Yes, protein has calories, so technically, eating way above your maintenance needs could lead to weight gain. But that’s true of any macronutrient. The issue isn’t protein; it’s a consistent calorie surplus.

In reality, protein is the least likely macronutrient to promote fat gain. It’s more filling, requires more energy to digest (thermic effect), and helps preserve lean muscle, which supports your metabolism. If anything, getting more protein usually helps people manage hunger and lose fat more effectively.

MYTH: You Don’t Need Protein If You Aren’t Working Out

FACT: You don’t need to lift heavy weights for protein to matter. Protein is essential even for sedentary adults. A substantial body of research indicates that protein supports metabolism, muscle maintenance, immune function, and hormonal health, even in the absence of regular training.

MYTH: Eating Protein Will Make Women Bulky

FACT: This is just as much a myth as “lifting weights will make women bulky.”  Women don’t build muscle like men. Hormonal differences mean women typically don’t experience the same rate or magnitude of muscle growth. Eating enough protein supports lean mass and hormonal balance, but it doesn’t automatically lead to being “bulky.”

MYTH: Protein Converts to Sugar in the Body

FACT: While some amino acids can be converted into glucose via gluconeogenesis, that’s not their primary purpose. Protein isn’t a carb, but under extreme calorie restriction or very low-carb diets, your body can repurpose some amino acids. That process is normal and not inherently fattening or harmful.

MYTH: The Body Can Only Absorb 30 Grams of Protein at a Time

FACT: As addressed earlier, that idea is not absolute truth. Research, including one study where participants consumed 100 grams of protein in a single meal, shows that excess protein isn’t wasted but used gradually in the muscle repair process. Digestive and metabolic pathways adjust to how much and how often you eat.

MYTH: Eating Protein Is Bad for Your Heart

FACT: Protein itself is not harmful to heart health. The concern lies in over-consumption of certain sources of protein, not the protein nutrient. For example, diets high in processed meats (like bacon, sausage, or deli meats) have been linked to increased heart disease risk, largely due to their high sodium, saturated fat, and in some cases, nitrate content.

It’s not the protein that’s the problem; it’s eating too many sources of protein that are high in saturated fat, or processed proteins with too much sodium.

Conclusion

We hope this guide helped cut through some of the noise and put to rest some of the most common myths, questions, and misconceptions about the role of protein.

If you are still unsure about how much protein you need, when to eat it, and which sources are best, or if you want a custom workout that actually works, plus a personalized plan that supports your goals and lifestyle, consider meeting with one of our certified personal trainers at RAW Athletic Club at our premium training facility in Port St Lucie, FL or Stuart, FL.

Our team has advanced training in nutrition and real-world experience, helping members simplify their strategy for results that last. Contact us or stop by one of our locations for a gym tour to get started today! 

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