With the surge in high-protein diets promoted by influencers and fitness communities, it’s easy to assume that more protein is better. However, dietitians warn that this fixation on protein can distract people from meeting other vital nutritional needs, such as fiber.
The Role of Protein
Protein is essential for many bodily functions—it supports cell and tissue repair, builds muscles, maintains metabolism, and boosts immunity. Registered dietitian Abbey Sharp explains that protein benefits overall health by supporting weight management, satiety, and energy. Yet, while protein is essential, it’s often less scarce in diets than social media would suggest.
Protein Obsession: Where It Comes From
Our fascination with protein isn’t new, but it’s grown with the fitness and weight-loss industries’ emphasis on muscle building. Protein is often touted as the key to building muscle and shedding weight, leading to an abundance of high-protein products, from powders to cereals. Social media platforms showcase countless high-protein recipes, with over 2.7 million Instagram posts tagged #highprotein.
However, dietitians like Federica Amati, a UK-based registered dietitian, argue that most people already meet their protein requirements through a balanced diet. She notes that excessive protein often comes at the cost of other essential nutrients. “When protein is the main daily goal, there’s a lack of regard for other vital nutrients,” she warns.
How Much Protein Do You Really Need?
Though many high-protein diets encourage consuming upwards of 140 grams daily, most people don’t need that much. According to the U.S. Department of Agriculture’s Dietary Guidelines, only 10-35% of daily calories should come from protein. For a simpler guideline, dietitians recommend 0.8 to 1.2 grams of protein per kilogram of body weight for adults. For instance, someone weighing 150 pounds would need about 54 to 82 grams of protein daily.
Older adults, however, may require slightly more protein to maintain muscle and bone mass, especially during menopause, which can impact body composition.
Risks of Too Much Protein
Eating excessive protein—especially from animal sources high in saturated fats—can have negative health consequences. Sharp cautions that high-protein diets focused on meat can lead to:
- Kidney stress and potential kidney stones
- Higher risk of colon cancer
- Increased risk of heart disease
The real harm, however, is when an overemphasis on protein leads people to neglect other nutrients, particularly fiber.
The Forgotten Nutrient: Fiber
While protein often dominates diet trends, most Americans actually lack sufficient fiber. The Dietary Guidelines for Americans suggest women consume 22-28 grams of fiber daily, while men should aim for 28-34 grams. In reality, most people fall short, consuming only 10-15 grams a day.
Fiber is crucial for digestive health, regularity, and satiety. Sharp points out that fiber-rich foods help with weight management because they increase fullness while being low in calories. Fiber also feeds beneficial gut bacteria, which play a role in signaling satiety and enhancing energy levels.
Getting Enough Fiber: Practical Tips
To incorporate more fiber into your diet, focus on plant-based foods. Amati recommends aiming for a variety of whole foods, like fruits, vegetables, nuts, and whole grains, instead of relying on fiber supplements. Here’s a list of fiber-rich options to add to your meals:
- Beans and lentils
- Fruits like apples, berries, and pears (with skin)
- Vegetables such as broccoli, Brussels sprouts, and potatoes with skin
- Whole grains like oatmeal and farro
- Nuts and seeds, including chia and flax seeds
For a balanced meal, Amati suggests filling half your plate with plant-based foods, one-quarter with a lean protein like tofu or salmon, and the last quarter with a high-fiber carbohydrate like brown rice or sweet potatoes.
Final Thoughts on Protein and Fiber Balance
Meeting your protein needs is essential, but it’s important not to lose sight of other nutrients. By focusing on fiber-rich foods and balancing protein intake, you can support both short- and long-term health. Dietitians suggest consulting with a nutrition expert to ensure you’re meeting your unique nutritional needs without overloading on protein or under-consuming fiber.
