How much protein is needed to prevent muscle loss?

To answer the question how much protein is needed to prevent muscle loss?, we examine several relevant points.

Dieting reduces fat stores, of course, but it also robs you of muscle tissue unless you maintain a high protein intake. But how much protein is needed to prevent muscle loss?

YES, everyone knows this, but unfortunately, a small segment of professional athletes actually take catabolism and its impact on the physique seriously, including its effects on organs and systems.

The ultimate fate of many people who diet is an unacceptably large amount of muscle loss. Women in particular end up looking like smaller versions of overweight people or, worse yet, “they become skinny twigs”….

To be clear about how much protein is needed to prevent muscle loss, you need to consume protein from various sources at every meal. From a biological standpoint, if you do not, muscle gremlins will come for you at night and steal your muscle, your pajamas, and any loose change you left near your bed.

In this context, we examine a study conducted by British researchers on how much protein needs to be consumed per day while dieting to prevent muscle loss.

The most common age-related causes of protein deficiency are inadequate dietary protein intake;

• Loss of appetite,
• Gastrointestinal problems,
• Reduced energy needs,
• Changes in food preferences,
• Reduced utilization of available protein (anabolic resistance, insulin resistance, etc.).
• And a higher baseline requirement (acute and chronic diseases, inflammatory disease, increased protein oxidation).

It is clear that many factors are involved here, so we first examine what the science says.

Baseline study: how much protein is needed to prevent muscle loss?

In a British study involving 33 bodybuilders (men and women, amateurs and professionals) aged 18 to 40, researchers determined how much protein is needed to prevent muscle loss [1].

• Before the study, these 20 bodybuilders consumed approximately 1.6 grams of protein per kilogram (for a 95 kg bodybuilder, this equals approximately 145 grams of protein) per day.
• The real-life scenario, however, involves consuming even three times as much in the case of high-performance bodybuilders.

In the British study, everyone was given diets in which they consumed 40% fewer calories than they normally burned each day;

To achieve this, the first group of bodybuilders simply consumed less than they normally ate. Proportionally, their protein intake fell to approximately 1 g per kg per day, while the second group replaced their protein shakes with carbohydrates and fats, increasing their daily protein intake to 2.3 g per kg of body weight (about 207 g for the hypothetical 95 kg bodybuilder).

This study, as well as others, concluded that increasing protein intake to 2.3–2.5 g per kg resulted in most of the weight loss coming from body fat, with minimal loss of muscle tissue. It is obvious but important to emphasize that if you consume less protein than you need, you will lose similar amounts of fat and muscle, reducing your chances of maintaining more than 60% of your 1RM in compound exercises or maintaining your testosterone levels.

Scientifically, our MASmusculo experts point out in their seminars and course that you should consider not only your weight but also your muscular build, including your BMI, training volume, and training intensity, when taking your protein needs into account.

Comparative study: how much protein is needed to prevent muscle loss?

Gyms and fitness clubs promote active lifestyles. At the same time, numerous nutritional errors and the phenomenon of incorrect supplementation are being observed among this group, especially among amateurs.

This nutritional behavior can cause discomfort, injuries, or a lack of progress.

One of the most serious errors is an incorrect level of protein in the diet.

The aim of a second comparable Polish study was to assess the quantity and quality of protein consumed by amateurs who engaged in recreational strength training [2].

The study involved 35 men aged 18 to 35 from Szczecin who practiced amateur strength training.

The author’s questionnaire collected information on supplementation, physical activity, and the subjective assessment of nutritional knowledge.

The test results obtained were subjected to statistical analysis using “Statistica12” software. On average, respondents consumed 1.8 g of protein/kg, with the highest recorded intake being 3.7 g of protein/kg of body weight and the lowest being 0.9 g/kg of body weight.

Total protein intake ranged from 70.2 to 295.7 g, with a mean value of 147.8 g (22%), which differed from the study group’s intake of 129–133 g, providing 14% of energy from protein.

Scientists demonstrated that protein supplementation provided, on average, 31% of the study group's total protein intake.

The results showed inadequate dietary behavior regarding food supplementation among the group studied, since too much protein can be useless, and so can too little.

Further education on the nutritional value of foods and a healthy, balanced diet is recommended for people who participate in strength sports.

The reality: how much protein to prevent muscle loss?

Clearly, preserving muscle mass during a diet is a much more daunting (and much more important) task than most of us think, and it is not only about, ¿how much protein to prevent muscle loss?.

It should be a key goal for you or any bodybuilder who is in a cutting or fat-loss phase, especially

Protein is the only macronutrient that does not have an inactive compound serving as a reservoir and, therefore, dietary amino acids must be incorporated into functional proteins.

The contractile proteins of skeletal muscle are the largest protein reservoir that responds anabolically to feeding and can be rapidly used to supply amino acids to the entire body during fasting or exercise-induced stress.

Insufficient protein intake to meet daily needs leads to a negative protein balance and results in skeletal muscle atrophy, impaired muscle growth, and functional impairment, which we call catabolism.

This means it is important to consume the right amount of protein to prevent muscle breakdown and maintain skeletal muscle mass and function.

Two states: How much protein to prevent muscle loss?

Your metabolism involves a set of processes that all living beings use to maintain their bodies. These processes include both anabolism and catabolism; they are two states to consider when thinking about ¿how much protein to prevent muscle loss?

Both help organize molecules by releasing and capturing energy to keep the body functioning well. These stages of metabolism occur simultaneously.

Anabolism focuses on growth and building: the organization of molecules.

• In this process, small, simple molecules are converted into larger, more complex molecules.
• An example of anabolism is gluconeogenesis, when the liver and kidneys produce glucose from sources that are not carbohydrates.

Catabolism is what happens when food is digested and the body's molecules are broken down to be used as energy.

• The body's large, complex molecules are broken down into smaller, simpler ones.
• An example of catabolism is glycolysis. This process is almost the reverse of gluconeogenesis.

So, understanding anabolism and catabolism can help you train more effectively to lose fat and gain muscle. Remember that rest is also part of the equation, because your metabolism functions even while you are sleeping.

Here, everything is about maintaining a balance that you need to preserve for your body composition.

Amounts: how much protein to prevent muscle loss?

Currently, the recommended daily value (DV) for protein is 0.8 g of protein/kg of body weight/day for everyone, regardless of age or sex. However, according to “bro-science collective experience” and other major studies, athletes—especially bodybuilders—should exceed double or triple this amount, depending on the situation… or more when training at a high-performance level…

Meanwhile, the estimated average requirement (EAR) is the average daily nutrient intake level needed to meet protein requirements, ranging from 0.66 to 1 g/kg of body weight/day.

On the other hand, the acceptable macronutrient distribution range (AMDR) states that protein should account for 10 to 35% of your total daily energy intake, but interestingly, this value is usually at the lower end of the range (10–15%) in most adults.

The results of the few studies conducted in adults are contradictory: some support the current recommended daily protein allowance, while others indicate that higher intakes are necessary to prevent nitrogen loss.

However, several scientific consensus reports on how much protein is needed to prevent muscle loss concluded that the current protein recommendation for older adults is too low and that, depending on the situation, an intake of 1.2 g/kg of body weight/day is accepted for maintaining optimal health [3].

Adults: how much protein to prevent muscle loss?

Although many adults consume protein at or above the recommended daily allowance, a significant proportion of older adults consume levels far below the recommended daily allowance [4].

A major American health and nutrition examination survey (NHANES) conducted several years ago showed that 20–24% of older women and 5–12% of older men consumed less protein than the RPE of 0.66 g/kg of body weight/day [5].

Therefore, considering that the RPE is the average protein intake sufficient for half of the healthy population, an even larger proportion of the aging population (from age 40 onward) is at risk of inadequate protein intake.

But when we ask, how much protein is needed to prevent muscle loss? we raise another question: why do adults need more protein than younger people?

The original recommendations (RDA) were based on studies conducted in healthy young adults and do not account for the many physiological changes that occur over time.

There is growing evidence that adults need more dietary protein than their younger counterparts to maintain good health, promote recovery from illness, and preserve muscle function, from training performance to recovery, which is key to toning and fat loss.

Protein synthesis: how much protein is needed to prevent muscle loss?

Muscle growth depends on protein consumption and the accompanying hyperaminoacidemia, which stimulates a marked increase in muscle protein synthesis (MPS) and a mild suppression of muscle protein breakdown.

Insufficient protein intake to meet daily needs leads to a persistently negative protein balance, resulting in skeletal muscle atrophy, impaired muscle growth, and functional decline.

Therefore, it is important to ask: how much protein is needed to prevent muscle loss and stimulate protein synthesis sufficiently to optimize the muscle-gain process?

The goal is always to replenish the amino acids lost during fasting and stress.

Many metabolic studies have shown that the use of dietary amino acids to stimulate protein synthesis is reduced or altered differently in adults than in younger people.

However, this anabolic resistance can be overcome with higher intakes of protein and individual amino acids, for example between meals or overnight [5-6].

Recently, multiple studies have indicated that 25 to 30 g of high-quality protein are needed to reach the threshold for maximum stimulation of protein synthesis at each meal [7,– 8 – 9 –10].

Limits: how much protein is needed to prevent muscle loss?

More than 20 other studies have consistently failed to find benefits from consuming more than 1.6 g / kg / d of protein and how to calculate how much protein is needed to prevent muscle loss?.

We conducted a text-based review from the University of Cambridge on the use of higher protein intake and its effect on recovery in the days following a hard workout.

To check whether there might still be a small benefit from increasing protein content that all these studies failed to find, the British researchers observed no further benefits for muscle growth or strength development from adding more protein during that anabolic window.

The following image summarizes the literature [11]. As you can see, 1.8 g / kg is the point at which additional protein intake stops producing benefits, except for high-performance bodybuilders who fall outside the standard of the intermediate athletic young man who has good muscle mass.

And the meals: how much protein is needed to prevent muscle loss?

Now, if we do not ask this question, is the meal pattern important for the optimal utilization of dietary protein, and for that do we need to know how much protein is needed to prevent muscle loss?.

The total amount of protein consumed daily is important, but recent research indicates that distributing dietary protein throughout the day's meals could be equally important.

For our analysts, protein consumed in the morning promotes muscle growth more than protein consumed later in the day.

Most people have heard the expression “you are what you eat.” This analysis, which not only discusses how much protein is needed to prevent muscle loss?, suggests that it is also true that “you are when you eat,” at least when it comes to protein.

According to the study, consuming protein early in the day leads to a greater boost in protein synthesis. In general, protein intake at breakfast averages about 15 g, which is less than what we consume at dinner, approximately 28 g.

These findings strongly support changing this norm and consuming more protein at breakfast or as a morning snack… what if you add more eggs to your breakfast?…

We also recommend protein bars, as well as “peanut butter, combining healthy fats and protein on top of sprouted-grain toast or fiber-based crackers.

Do you prefer animal proteins?

The greater environmental impact of following a diet rich in meat and dairy products could also provide a reason to change habits… but?….

Unfortunately, as happens all too often in the field of nutrition, the headlines that portrayed the new research this way not only took the findings out of context but were also inaccurate and misleading.

The study, published in the American Journal of Clinical Nutrition, analyzed how consumption of six different groups of plant- and animal-based foods was related to muscle mass in around 3,000 volunteers, mainly middle-aged [12].

The groups were organized based on the volunteers’ preferred protein source and classified as red meat, chicken, fish, low-fat milk, fast food, full-fat dairy, and fruit or vegetables.

This excellent research revealed two main findings. First, and in line with previous research, the study showed that people who ate the most protein were more likely to have the greatest amount of muscle mass.

Second, there was no relationship between the amount of muscle mass the volunteers had and the protein source they consumed most frequently.

So, unlike the sensationalist headlines, this study (like others) does not support the claim that plant-based protein is “better” than animal protein for building muscle; therefore, if you want to continue consuming animal sources, that is your decision and nobody else’s.

Like any other credible research, these study findings must be placed in context. Therefore, it may not be appropriate to apply these findings about middle-aged people to other groups, such as older adults or young people who go to the gym.

Do you prefer plant-based proteins?

It has often been pointed out that a vegetarian diet is not as rich as a non-vegetarian diet in some respects, with protein being the most pronounced.

But now, with the rise of veganism, which excludes dairy products, there are several plant-based protein sources that together can provide all the nutrients.

The question about protein becomes more pertinent in the case of bodybuilding. Proteins are known to be the building blocks of muscle. Can a person obtain all of them from plant-based supplements and foods?

Well, “regardless of the protein source—whether plant-based or not—if it comes from a good source (or a nutritionally balanced combination of sources), it can enable the body to meet those goals.”

So a diet based on plant-based protein can emulate animal protein (including whey), even for a bodybuilder, as long as the required daily intake is reached.

However, you should bear in mind that plant-based proteins are not complete proteins and do not contain all the essential amino acids.

Back to the point. When certain plant-based proteins are combined, they make up for each other's limiting amino acids, thereby completing the combination.

For example, mix beans with grains, such as pea protein and brown rice protein. In this way, plant proteins can meet the nutritional requirements of an active individual such as an athlete.

Undoubtedly, combining all plant proteins with other vitamins and minerals can meet nutritional needs, even for athletes who have lower levels of vitamin B, iron, and vitamin D3—a difference compared with meat-eaters.

Conclusions

Regarding the question, how much protein is needed to prevent muscle loss? You cannot rely solely on the recommendations on your supplement labels.

Eating plenty of protein from different sources to stimulate protein synthesis, focusing on breakfast (because people generally consume less protein in the morning), could make a difference in your training performance and recovery, helping regenerate muscle tissue and even improving your health.

Although there are differences between the bulking and cutting phases, with more protein needed to prevent catabolism, there are basic points to understand when following a diet with the level of commitment required for a career in bodybuilding or fitness.

Bodybuilders' protein needs often fall within this range, but depending on body composition, this could mean consuming as much as 2.5 to 3 g/kg of body weight.

• Bodybuilders should consume a diet in which 25 to 30 percent of their total calorie intake comes from protein, or approximately 188 to 225 grams of protein per day on a 3,000-calorie diet.
• Power athletes competing in the off-season should consume around 2 to 2.5 grams of protein per kilogram of body weight. This means they would need approximately 153 to 225 grams of protein per day during periods of intense training.
• Bodybuilders who reduce their calorie intake by 15% during the pre-contest period should add 2 to 2.25 g/kg of protein per day—35% of their total calories—to minimize the loss of muscle tissue associated with the cutting process.

To wrap up, a controversial topic. Is excess protein harmful?… here is the video prepared by MASmusculo.