Drinking Vs. Eating Protein: Which Is Healthier?ATHVisions – Getty Images
Understanding how to incorporate protein into your diet is crucial for overall health and well-being. With a growing array of liquid protein options—such as shakes, coffees, and even sodas—it’s important to consider whether the method of consumption truly matters. This article explores the differences between consuming protein through food versus drinks, offering insights from nutrition experts.
Protein requirements can vary based on factors like age, weight, and activity level. The recommended dietary allowance (RDA) for protein has remained stable at 0.8 grams per kilogram of body weight, but many health professionals advise aiming for at least 1 gram per kilogram. For instance, a person weighing 150 pounds should aim to consume approximately 68 grams of protein daily.
Meet the experts: Sonya Angelone, Ph.D., R.D.N., a San Francisco-based nutritionist; Scott Keatley, R.D., co-founder of Keatley Medical Nutrition Therapy; and Jessica Cording, R.D., C.D.N., author of The Little Book of Game-Changers.
If you’re not particularly fond of meat, the idea of hitting those protein targets might feel daunting, which is where protein-rich drinks come into play. But do liquid sources of protein, like protein coffee or sodas, provide the same benefits as solid foods like meat and eggs? We consulted three dietitians for their perspectives.
What’s the difference between eating and drinking your protein?
There are several fundamental distinctions. “Both forms provide protein, but their types and quality can differ significantly,” explains Sonya Angelone.
Moreover, whole foods offer more than just amino acids. As Scott Keatley, R.D., points out, “Foods provide vital minerals such as iron, zinc, magnesium, calcium, phosphorus, and potassium, along with essential vitamins like B12 and B6. These nutrients are crucial for functions like oxygen transport, enzyme activities, muscle contractions, and overall metabolism.”
Eating solid protein sources requires chewing, which naturally slows consumption. This also allows these foods to linger in the gut longer, helping you feel fuller, according to Keatley.
“Liquid protein is absorbed quickly but often lacks the structure found in solid foods, making it less filling and easier to consume in larger amounts without realizing it,” he adds.
While nutritional shakes have been around as aids for individuals struggling to meet their protein needs, the new generation of protein drinks is generally not classified as meal replacements, asserts Jessica Cording. “They represent a unique category of beverages,” she notes.
Drinking vs. eating protein: Which is better for you?
Drinking protein-infused coffees or sodas differs from consuming solid protein foods. Cording emphasizes that although both methods provide protein, real food is essential to ensure your overall nutritional needs are met.
Angelone concurs, noting, “A significant advantage of acquiring protein from whole foods is their simplicity and minimal additives unless processed. Whole foods also contain additional nutrients not typically found in liquid options, such as fiber from plant-based protein sources, which contributes to fullness and gut health.”
Many liquid protein products may contain additives like sugars or artificial sweeteners, as well as preservatives and thickening agents that might not agree with everyone, according to Angelone.
Relying heavily on liquid protein sources may detract from other crucial avenues for nutrient intake, warns Keatley. “Depending too much on drinks can result in lower fiber and micronutrient consumption, reducing overall dietary variety,” he says. Furthermore, products with added sugars or high caffeine content can lead to gastrointestinal discomfort or sleep disturbances.
Consuming protein in liquid form may not be as satisfying as eating it, Cording points out. “From my experience, clients often report a disconnect when drinking their meals instead of chewing them. The act of sitting down and enjoying a meal offers a different experience,” she reflects.
Unless you have specific dietary requirements, Keatley recommends prioritizing solid protein sources. “Whole foods should be the foundation of your meals, as they offer satiety and a comprehensive nutrient profile. Liquid protein should be viewed as a convenience option, useful post-exercise or during busy times,” he adds.
What happens if you have too much protein?
Most individuals won’t utilize more than 20 to 22 grams of high-quality protein per meal or snack, according to Keatley. “Excessive protein intake doesn’t proportionately increase muscle growth,” he explains. Instead, the body oxidizes surplus amino acids for energy or converts them in the liver, leading to nitrogen being excreted as urea and carbon skeletons being used for energy—or stored as fat with high intake.
Consuming several protein-shakes throughout the day might push your protein intake to levels that exceed your needs without additional benefit, according to Keatley.
Cording mentions that while it is possible to overconsume protein, especially when relying on protein-infused drinks, it’s challenging for healthy adults to reach harmful levels. “You would start feeling uncomfortably full long before that happens,” she clarifies. However, if you have pre-existing kidney issues, it is advisable to consult your healthcare provider regarding your protein consumption to ensure you don’t overdo it.
The primary concern with excessive protein intake is potential weight gain. “When you consume too much protein, it can convert to fat,” Cording adds.
The best way to get protein
Keatley advises spreading your protein intake throughout the day instead of consuming large amounts at once. “Opt for whole foods primarily, and turn to liquid protein only when necessary,” he says. It’s also essential to monitor your daily protein intake along with added sugars in your diet.
Cording acknowledges that while the latest protein drinks may seem healthful, they serve a specific audience. “For individuals who skip breakfast and only have coffee, these drinks can be a valuable addition,” she notes. “While they have their place, I wouldn’t recommend relying on them excessively.”
Ultimately, Keatley views protein-infused beverages as supplements rather than dietary staples. “They are particularly useful after workouts, during travel, or when a full meal isn’t feasible. However, most of your protein should still be sourced from whole foods to maintain dietary quality, satisfaction, and long-term adherence,” he emphasizes.
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