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How protein helps you lose weight

How protein helps you lose weight

Learn how protein aids in weight loss by boosting satiety, preserving muscle, and enhancing metabolism. Find out how much you need and tips to increase your intake.
Diet
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protein helps you lose weight
Andrea Burgett RDN and Justin Zaghi MD
August 15, 2024

Getting enough protein is crucial for effective weight loss. Studies show that protein helps induce satiety while consuming fewer calories, making it easier to maintain a calorie deficit. Additionally, protein is essential for preserving muscle mass during weight loss. Weight loss often leads to muscle loss, but studies have shown that a protein-rich diet helps maintain lean muscle, ensuring that the weight you lose is primarily from fat. This not only supports a healthier body composition but also boosts your metabolism, making your weight loss journey more effective and sustainable. In this blog, we will discuss how you can increase your protein intake, the benefits of protein in weight loss, and how it supports your body overall.

How Much Protein Should You Eat for Effective Weight Loss?

Determining how much protein you should eat depends on several factors, including your weight, activity level, and overall health goals. The Recommended Dietary Allowance (RDA) for protein is 0.8 grams per kilogram (0.36 grams per pound) of body weight per day. However, for effective weight loss and muscle preservation, it's beneficial to consume about twice the RDA , which is 1.6 grams of protein per kilogram (0.73 grams per pound) of body weight. For instance, if you weigh 154 pounds (approximately 70 kilograms), you should aim for around 112 grams of protein daily. Studies have shown that consuming this higher amount of protein is associated with maintaining more muscle during the weight loss process. To personalize your protein needs, you can use the formula: protein intake (grams) = your weight (lb) x 0.73. This tailored approach ensures you get enough protein to support your weight loss and muscle preservation goals effectively.

Increasing Your Protein Intake

To experience the benefits of protein, it’s essential to incorporate adequate amounts into your diet. Here are some helpful ways to increase your protein intake, including examples of protein-rich foods and what to look for in protein shakes.

Protein-Rich Food Sources

  1. Lean Meats: Chicken breast, turkey, and lean cuts of beef or pork are excellent sources of high-quality protein. For example, a 3-ounce serving of chicken breast contains about 26 grams of protein.
  2. Fish and Seafood: Fish like salmon, tuna, and cod are not only rich in protein but also provide healthy omega-3 fatty acids. A 3-ounce serving of salmon offers approximately 22 grams of protein.
  3. Eggs: Eggs are a versatile and affordable source of protein. One large egg provides around 6 grams of protein. Studies have shown that both egg yolks and egg whites are healthy when consumed in moderation.
  4. Dairy Products: Greek yogurt, cottage cheese, and milk are good sources of protein. A cup of Greek yogurt can contain up to 20 grams of protein, making it a great snack or breakfast option.
  5. Legumes: Beans, lentils, and chickpeas are plant-based protein sources that are also high in fiber. For instance, a cup of cooked lentils provides about 18 grams of protein.
  6. Nuts and Seeds: Almonds, peanuts, chia seeds, and flaxseeds offer a good amount of protein and healthy fats. An ounce of almonds contains approximately 6 grams of protein.
  7. Whole Grains: Quinoa, farro, and barley are whole grains that also contribute to your daily protein intake. A cup of cooked quinoa provides about 8 grams of protein.
  8. Tofu and Tempeh: These soy-based products are excellent protein sources for vegetarians and vegans. A 3-ounce serving of tempeh contains around 18 grams of protein.

Choosing Protein Shakes

Protein shakes can be a convenient way to increase your protein intake, especially if you have a busy lifestyle. In fact, prior to the popularity of weight loss medications, protein shakes were one of the main ways in which we helped patients to lose weight. Here’s what to look for when choosing a protein shake:

  1. Adequate Protein Content: Ensure the protein shake provides at least 20 grams of protein per serving. This amount ensures that the protein shake is helping you to feel full.
  2. Low Calorie Count: Look for protein shakes that are 150 calories or less, which will help promote weight loss. 
  3. High-Quality Protein Source: Look for protein shakes that contain high-quality protein such as whey, casein, or plant-based proteins like pea or hemp. Whey protein is known for its quick absorption, making it a popular choice for post-workout recovery. If you have food allergies or intolerances, look for protein shakes that are free from common allergens such as dairy, soy, or gluten.

Some of our favorite brands include Fairlife, Premier, Orgain, Isopure, and Atkins. Many of these brands also have pre-made smoothies that are very convenient on the go. Just Ingredients, Truvani, Ora Organics are also great brands that, while more expensive, may be gentler on gut health due to fewer additives.

Benefits of Protein in Weight Loss

Protein is not just essential for muscle building and repair; it also plays a significant role in weight loss. Here’s how protein supports weight loss and overall health:

Increased Satiety and Reduced Appetite

Protein has a high satiety value, meaning it helps you feel full and satisfied for longer periods. This can lead to reduced overall calorie intake. Studies have shown that high-protein diets increase the release of satiety hormones, while reducing levels of the hunger hormone. This hormone regulation helps control appetite and prevents overeating.

Thermic Effect of Food (TEF)

The thermic effect of food (TEF) refers to the energy expenditure required for digestion, absorption, and metabolism of nutrients. Protein has a higher TEF compared to carbohydrates and fats, meaning your body burns more calories digesting protein. Approximately 20-30% of the calories in protein are used during digestion, compared to 5-10% for carbohydrates and 0-3% for fats . This increased energy expenditure can contribute to a higher overall metabolic rate, aiding in weight loss.

Preservation of Lean Muscle Mass

When you lose weight, it's important to maintain lean muscle mass, as muscle tissue  helps keep your metabolism running efficiently. High-protein diets have been shown to preserve lean muscle mass during weight loss, ensuring that most of the weight lost comes from fat rather than muscle . This muscle preservation is crucial for maintaining a healthy metabolism and preventing weight regain.

Improved Body Composition

In addition to preserving lean muscle mass, protein intake can also improve body composition by promoting fat loss. Studies have demonstrated that individuals who consume higher amounts of protein tend to have a lower body fat percentage and a more favorable body composition compared to those with lower protein intake.

Enhanced Muscle Recovery and Performance

Protein is essential for muscle repair and recovery, especially after exercise. Consuming protein after workouts can help repair damaged muscle fibers, reduce muscle soreness, and promote muscle growth. 

Support for Healthy Metabolism

A diet rich in protein supports a healthy metabolism. Protein assists with preserving muscle mass and promotes balanced hunger and satiety hormones.  A well-functioning metabolism is essential for effective weight management and overall health.

Practical Tips for Increasing Protein Intake

To make the most of the benefits of protein in weight loss, here are some practical tips to help you increase your protein intake:

  1. Incorporate Protein in Every Meal: Aim to include a source of protein in every meal and snack. This practice helps distribute protein intake evenly throughout the day, supporting satiety and muscle maintenance.
  2. Choose Protein-Rich Snacks: Opt for high-protein snacks such as Greek yogurt, cottage cheese, nuts, and seeds to keep you full between meals.
  3. Use Protein Supplements: If you struggle to meet your protein needs through food alone, consider using protein supplements like shakes or bars. Choose high-quality options with minimal added sugars and artificial ingredients.
  4. Experiment with Plant-Based Proteins: Incorporate a variety of plant-based proteins such as beans, lentils, tofu, and tempeh into your diet. These options are not only rich in protein but also provide additional nutrients and fiber.
  5. Prepare Protein-Rich Meals in Advance: Meal prepping can help ensure you have protein-rich options readily available. Prepare meals like grilled chicken, quinoa salads, and egg muffins in advance for quick and convenient protein sources.
  6. Balance Your Plate: Along with protein, include a variety of vegetables, whole grains, and healthy fats in your meals to create a balanced and nutritious diet.

Conclusion

Protein is a vital nutrient that plays an important role in weight loss and overall health. By increasing your protein intake through a variety of food sources and high-quality supplements, you can experience enhanced satiety, improved body composition, and better muscle maintenance. Incorporating protein into your diet not only supports weight loss but also promotes overall well-being and metabolic health.

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