In the quest for a healthier life and a stronger body, foods with added protein have flooded supermarket shelves. From yogurts to energy bars, the promise of “more protein” has become ubiquitous. But are they really beneficial for everyone? Or are there hidden risks we should be aware of? Nutrition experts from the United States and specialized organizations provide a balanced perspective.

The Benefits: Why Are We Seeking More Protein?

Protein is an essential macronutrient, fundamental for life. Its benefits are undeniable, especially in certain contexts:

Muscle Preservation and Satiety

Adequate protein intake is crucial for maintaining and repairing muscle mass. This is especially important as we age, as it helps prevent sarcopenia (age-related muscle loss) and contributes to bone health. Dr. Nancy Rodriguez, professor of nutritional sciences at the University of Connecticut and a member of the 2020 Dietary Guidelines Advisory Committee, emphasizes, “Protein is critical for preserving muscle mass, especially in older adults and during weight loss, where it helps preserve lean tissue.” Protein also promotes feelings of fullness, which can be a useful tool for weight management. By feeling fuller, you’re less likely to consume extra calories, which could reduce your overall calorie intake. Recovery for Athletes For those who lead active lifestyles or are athletes, protein is vital for muscle recovery and growth after intense exercise. A study published in the Journal of the International Society of Sports Nutrition suggests that athletes may need between 1.4 and 2.0 grams of protein per kilogram of body weight per day to optimize these processes.

The Risks: When Excess Can Be Harmful

While protein is essential, the idea that “more is better” can be misleading and, in some cases, dangerous.

Kidney Overload and Hidden Disease

One of the biggest risks of over-protein consumption is kidney overload, especially for people with chronic kidney disease. Sadly, this condition often goes unrecognized; the Centers for Disease Control and Prevention (CDC) estimates that approximately 1 in 7 U.S. adults (about 15%) has chronic kidney disease, and many are unaware of it. Dr. Katherine Zeratsky, a registered dietitian at the Mayo Clinic, warns, “While protein is essential, over-consumption can be problematic, especially for those with preexisting kidney problems.”

Extra Calories and Displaced Nutrients

Excess protein, if not burned through physical activity, can be converted to fat by the body. In addition, relying too heavily on foods with added protein can lead to a displacement of other vital nutrients. You could be limiting your intake of complex carbohydrates, fiber, vitamins, and minerals found in a varied and balanced diet.

Hidden Sugars and Fats

It's crucial to read the label. Many “fortified” protein products may contain high amounts of sugars, saturated fats, or sodium to enhance their flavor, which could negate any benefits of the added protein. As Dr. Zeratsky points out, “Many protein-fortified products may come with a ‘package’ of not-so-healthy ingredients like added sugars or fats.”

Who Should Be Cautious or Avoid It?

Not everyone benefits equally from foods with added protein. Some groups should be particularly cautious:

Who Might Benefit?

While not for everyone, protein-fortified foods can be a helpful supplement for certain individuals, always prioritizing natural sources of protein:

Dr. Susan Bowerman, registered dietitian and director of nutrition education and training, comments: “For athletes looking to optimize muscle recovery and growth, or for older adults struggling with muscle loss, protein-fortified foods can be a convenient way to boost their intake. However, they should always be a complement to a protein-rich, whole-food diet.”

The Expert Recommendation: Go Natural

The recommended daily intake of protein for healthy adults ranges from 10% to 35% of their total calories, which works out to about 0.8 grams of protein per kilogram of body weight per day. This figure may vary depending on age, sex, activity level, and health status.

The American Academy of Nutrition and Dietetics is clear: “For most healthy adults, a varied diet that includes lean protein sources is usually sufficient to meet daily needs.” The priority should always be to get protein from natural, healthy sources, such as:

It is essential to spread your protein intake throughout the day. Before incorporating foods with added protein or supplements into your diet, we strongly recommend consulting a doctor or a registered dietitian-nutritionist. They can assess your individual needs and provide personalized guidance to ensure your diet is safe and effective.

Are you considering integrating more protein into your diet? What types of foods are you interested in exploring?