Can You Take Collagen For Weight Loss?

Collagen is a protein that is found naturally in the body and a very popular supplement. Taking collagen might help with weight loss by promoting satiety and changing the way the body stores fat. 

Interest in using collagen supplements for weight loss has increased, but research has not established a direct relationship yet. Keep reading to learn more about the benefits of supplementing with collagen and how it can potentially help with weight loss. 

What is Collagen?

Collagen is the body's most abundant protein and is widely found in bones, muscles, skin, and tendons. Collagen is used in wound healing procedures as well as cosmetic formulations to improve skin appearance.

This protein acts as a foundational scaffold, giving strength and structure to the body. As a vital component of connective tissue, it plays an important role in cell cohesion, improving the resilience and elasticity of the skin.

Collagen is a significant part of many structures in the body including the skin, tendons, blood vessels, cartilage, bones, and connective tissue, which anchor cells together. It’s an important part of the extracellular matrix, a molecular network that upholds the body's tissues.

Maintaining healthy collagen levels promotes:

  • Healthy joints
  • Supports skin elasticity
  • Protects vital organs
  • Promotes a healthy heart and blood vessels

There are around 28 different types of collagen. As people age, collagen levels diminish, leading to thinner and weaker collagen fibers, which experts speculate may contribute to skin aging. 

Is Collagen a Complete Protein?

Collagen is not a complete protein. Complete proteins contain all nine essential amino acids that the human body cannot produce on its own. These essential amino acids must be consumed from the diet. 

Collagen is made up of three amino acids: glycine, proline, and hydroxyproline. While these amino acids play a significant role in collagen's structure and function, they do not provide all the essential amino acids in sufficient quantities to be classified as a complete protein.

For a protein to be considered complete, it must contain a balanced profile of essential amino acids. Animal-based sources like meat, fish, eggs, and dairy are examples of complete proteins, as they contain all the essential amino acids in appropriate proportions.

Protein and Weight Management

There is still a lot to learn about collagen supplementation and weight loss. This is an area of emerging research, so there isn’t much solid evidence to support it. There is, however, a ton of research on protein and weight management. 

Collagen may indirectly promote weight loss through a number of things like reducing joint pain, increasing satiety, and reducing body fat. 

One potential way collagen may support weight loss is by minimizing joint pain. Joint pain can get in the way of regular physical activity, a crucial aspect of most weight loss outcomes. Collagen's role in maintaining healthy connective tissue in the joints makes it a potentially useful for reducing pain and promoting better mobility.

Another potential benefit of collagen for weight management is its possible role in increasing feelings of satiety. Feeling full and satisfied after meals can lead to reduced food intake and, over time, weight loss. 

Collagen has also been studied for its effects on body fat reduction. Rodent studies have shown that specific collagen peptides might influence fat storage. For instance, one animal study revealed that administering collagen peptides resulted in visceral fat loss in mice that were fed a high-fat diet. The fat loss did not result in changes to body weight, however. 

Other research showed that obese rats treated with marine collagen peptides had reductions in body mass index (BMI), weight, and fasting blood glucose levels.

Human studies have shown similar results. In a 2019 study, participants who took collagen supplements for 12 weeks lost more body fat mass and had a lower body fat percentage than participants who took a placebo.

Scientists are unsure of just exactly how collagen affects fat storage. Some research suggests that collagen peptides might impact gene expression related to fat storage.

Does Collagen Increase Satiety?

Collagen is a type of protein, and protein is well-known for increasing satiety. 

While protein intake is associated with satiety, collagen may be less effective at promoting satiety than other protein sources like whey protein. 

Some studies have indicated that whey protein, which contains specific amino acids such as BCAAs and tryptophan, may have a more significant impact on satiety and body composition.

How Much Collagen Should I Take Daily for Weight Loss?

The recommended daily dose of collagen for weight loss can vary depending on individual nutrition needs, health status, and the specific collagen supplement being used. 

There is no standard recommended dose for collagen supplements, and scientific research on the optimal dosage for weight loss is limited. However, there are some general guidelines that can help. 

Typical collagen supplements come in the form of powder, capsules, or drinks, and the most common dosage ranges from 5 grams to 15 grams per day. Some studies have used doses within this range to investigate the effects of collagen on joint health, skin elasticity, and other benefits.

If you're considering using collagen for weight loss, it's essential to follow the manufacturer's instructions on the supplement's packaging. Additionally, consult with a healthcare professional or a registered dietitian to determine how much you should take to achieve your specific health goals.

While collagen supplementation may offer potential benefits for weight management, it is not a magic solution for weight loss. A balanced diet, regular exercise, and overall healthy lifestyle practices are needed for successful and sustainable weight loss.

Always prioritize a well-rounded approach to weight management and consider collagen supplementation as one element of your overall strategy – the cherry on top.

Can Collagen Make You Gain Weight? 

Collagen itself does not inherently cause weight gain. In fact, collagen is a low-calorie and low-fat supplement. When consumed in its pure form, collagen does not contain significant amounts of carbohydrates or fats that could contribute to weight gain.

However, like any supplement or food, the context in which collagen is consumed can impact weight. If collagen supplements are taken as part of a well-balanced diet and in appropriate amounts, they are unlikely to lead to weight gain.

Some collagen products may have added sugars, flavors, or other ingredients that could increase calorie intake and potentially lead to weight gain if consumed excessively. Always check the nutrition information and ingredients list when choosing a collagen supplement and opt for products that have minimal additives.

Collagen vs Whey Protein: Which is Better for Weight?

The choice between collagen and whey protein for weight management depends on several factors, including your personal preferences, dietary needs, and health goals. Both collagen and whey protein are excellent sources of protein, but they have different characteristics that may influence their effectiveness for weight-related objectives.

Protein Composition

  • Collagen is primarily composed of three amino acids - glycine, proline, and hydroxyproline. It lacks some essential amino acids, such as tryptophan and methionine, which are present in whey protein.
  • Whey protein is a complete protein, containing all nine essential amino acids required by the body. It has a higher biological value, meaning it is well-absorbed and utilized by the body compared to collagen.


  • Collagen may promote satiety due to its protein content, but it may be less effective than whey protein in this regard. Some studies suggest that whey protein may have a effect on satiety, potentially leading to reduced calorie intake and weight loss.
  • Whey protein has been extensively studied for its ability to increase feelings of fullness and satiety, which can be beneficial for weight management.

Joint Health

  • Collagen is essential for supporting joint health, which can indirectly contribute to weight management by reducing joint pain and making movement and activity less painful.
  • While whey protein does not have direct benefits for joint health, it can support muscle repair and recovery, which is important for maintaining overall physical health during weight loss efforts.

Calorie Content

  • Collagen is typically low in calories, making it a suitable option for those aiming to reduce caloric intake.
  • Whey protein supplements may vary in calorie content, so it's essential to check the label for the specific product you choose.

Ultimately, both collagen and whey protein can be part of a balanced diet and may contribute positively to weight management when taken in addition to a healthy lifestyle. If your primary goal is to increase protein intake and promote feelings of fullness, whey protein with its complete amino acid profile might be more suitable. On the other hand, if joint health and skin benefits are also important to you, collagen could be a valuable addition.

Can You Take Too Much Collagen?

While collagen is generally considered safe for most people when consumed in reasonable amounts, excessive intake may lead to potential side effects.

To avoid potential adverse effects, follow the recommended dosage provided by the manufacturer or the guidance of a healthcare professional. Collagen supplements are typically available in powder, capsule, or liquid form, and the dosage may vary depending on the specific product and intended use.

Are There Negative Side Effects of Collagen?

Taking too much collagen may result in negative side effects. Excessive use may cause digestive discomfort, such as bloating, gas, or diarrhea. This is more likely to occur if you exceed the recommended dosage or if you have a sensitive digestive system.

Some individuals may be allergic to collagen or certain sources of collagen (e.g., bovine or marine collagen). Allergic reactions can vary in severity and may include symptoms like itching, rash, hives, or even more severe reactions in rare cases.

Collagen supplements derived from marine sources, such as fish collagen, may contain higher levels of calcium. Excessive calcium intake can lead to hypercalcemia, a condition that can cause kidney stones, digestive issues, and other health problems.

These side effects are rare, and most people can safely tolerate and benefit from reasonable intake of collagen supplements. 

TL;DR: Can You Take Collagen for Weight Loss?

In short, taking collagen supplements may help with weight loss, but the research is limited. Taking collagen probably won’t hinder your weight loss efforts, but there isn’t much solid proof that says it will result in weight loss. 

Collagen supplements might promote weight loss through increased satiety, joint pain relief leading to increased physical activity, and possible influences on body fat reduction.