Collagen is a type of protein that is found in many parts of our body, such as skin, bones, tendons, and ligaments. 

It is the most abundant protein in the body, and it plays a critical role in maintaining the strength and structure of our tissues. But besides that, did you know that collagen may also aid with losing weight? 

In this post, we will take a look at the science behind collagen and how it can help you cut some unwanted weight. Here, we will also go over how long it takes for collagen to work, what’s the most suitable type of collagen for weight loss and cellulite reduction, and more.

Does Collagen Help Reduce Weight?

Source: Pexels

Collagen has been confirmed to have several advantages that may aid with weight loss. For starters, it contains protein, which can help lower hunger and promote satiety, leaving you feeling satisfied for longer periods of time. And as a result, you may be able to consume fewer calories and then lose weight. [1][2]

Furthermore, collagen has been shown to promote a healthy digestive system, which is a necessary component for weight loss. Good gut health can improve digestion, food absorption, and the elimination of body waste. [2]

Another advantage of collagen is the fact that it may aid in the increase of lean muscle in your body, which is vital for calorie and weight reduction. Our muscle mass declines as we age, resulting in reduced metabolism and increased weight. Collagen supplements could potentially prevent this by boosting collagen production in our bodies. [1][3]

What’s the Best Collagen to Use for Weight Loss and Cellulite Reduction?

Source: Unsplash

There are various collagen supplements to pick from, but for this article, we will focus on the three most effective for weight loss.

Marine Collagen

First, we have marine collagen, which is sourced from fish skin and scales and is thought to be more easily absorbed by the body than other types of collagen. It also contains Type I collagen, the most abundant type in the body and essential for skin elasticity. [4][5]

Source: Canva

Additionally, marine collagen has antioxidants and anti-inflammatory qualities that may help lose weight and reduce cellulite. [5][6]

Bovine Collagen

Bovine collagen, on the other hand, is obtained from cows and contains Type I and Type III collagen, which are crucial for the health of the skin, hair, and nails, as well as the joints and bones. It is a common source of collagen used in various applications, such as supplements, skincare, and biomedical products. [6]

Source: Canva

However, some people may have allergies or sensitivities to bovine collagen, so read product labels carefully and contact healthcare experts if you have any concerns. [7]

Furthermore, to reduce the danger of exposure to pollutants and antibiotics, ensure that the bovine collagen you’ll use is sourced from a plant that supplies healthy, grass-fed cows.

Porcine Collagen

Lastly, we have the porcine collagen derived from pigs’ skin, bones, and cartilage. It is a common source of collagen used in various fields, including biomedical and cosmetic products. However, similar to bovine collagen—there might be cases that some people may develop allergies or sensitivities to it. [6] [7]

Source: Collagen

Each form of collagen has its own set of advantages, but among the three we’ve highlighted previously, marine collagen is frequently regarded as the best option for weight loss and cellulite reduction. [6] [7] [8]

Nevertheless, it is worth noting that the usefulness of collagen for weight loss has not been thoroughly researched, and additional research is required to verify its benefits. However, preliminary research has shown encouraging outcomes, particularly when accompanied by a healthy diet.

What’s the Best Time to Take Collagen?

Shilajit vs. Sea Moss 3
Source: Pexels

Collagen is best taken first thing in the morning on an empty stomach. Taking collagen on an empty stomach aids in the body’s absorption and utilization. It’s also a good idea to wait at least 30 minutes after taking collagen supplements before eating or drinking anything. [9]

Collagen can also be taken before or after exercise to aid with muscle growth and recovery. Collagen supplements can be mixed into smoothies, coffee, or water for a quick and easy approach to getting collagen into your diet. [9][10]

How Long Does it Take for Collagen to Work for Weight Loss?

Shilajit vs. Sea Moss 4
Source: Pexels

The time it takes collagen to work for weight loss is determined by various factors. This includes your food intake, exercise habits, and overall health. Some people may notice effects within a few weeks, while others may not notice a difference for several months. [9]

To maximize the weight loss effects of collagen, a good diet, and regular exercise are required. And as we’ve previously stated, collagen supplements should be taken as advised, preferably on an empty stomach in the morning. It’s also critical to stay hydrated during the day by drinking a lot of water. [9][11]

Bottomline: Does Collagen Work in Losing Weight?

Source: Canva

Collagen may be a useful tool for weight loss and cellulite reduction. It can help reduce hunger, increase satiety, improve gut health, stimulate lean muscle mass growth, and increase metabolism.

However, it is necessary to remember that collagen is not a miraculous weight-loss remedy. It should be used in conjunction with a nutritious diet and regular exercise. 

And as a rule of thumb, it is always best to consult with healthcare experts before using any of these supplements.


The human body has at least 28 distinct forms of collagen, although the three most prevalent varieties—Type I, Type II, and Type III—account for around 80 to 90% of all the collagen.
Collagen is beneficial for people of every age. However, since the consequences of aging don’t become apparent until later in life, taking collagen supplements is suggested once you’re in your early 20s. If you live an active lifestyle, you could discover that the signs of aging appear sooner.
Of course, it is. As absurd as it may sound, we highly suggest you obtain collagen from your diet first.
Taking collagen is like brushing your teeth. In other words, you lose the health benefits if you stop doing it. If you stop cleaning your teeth, it is just a matter of time until your overall dental condition deteriorates.

Therefore we suggest taking collagen daily, either by incorporating it into your diet or via health supplements.

Disclaimer: This article is only a guide. It does not substitute the advice given by your healthcare professional. Before making any health-related decision, consult your healthcare professional.

Editorial References And Fact-Checking

  1. Clark KL, Sebastianelli W, Flechsenhar KR, Aukermann DF, Meza F, Millard RL, Deitch JR, Sherbondy PS, Albert A. 24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Curr Med Res Opin. 2008 May;24(5):1485-96. doi: 10.1185/030079908×291967. Epub 2008 Apr 15. PMID: 18416885.
  2. Lee CH, Singla A, Lee Y. Biomedical applications of collagen. Int J Pharm. 2001 Jun 19;221(1-2):1-22. doi: 10.1016/s0378-5173(01)00691-3. PMID: 11397563.
  3. Hays NP, Kim H, Wells AM, Kajkenova O, Evans WJ. Effects of whey and fortified collagen hydrolysate protein supplements on nitrogen balance and body composition in older women. J Am Diet Assoc. 2009 Jun;109(6):1082-7. doi: 10.1016/j.jada.2009.03.003. PMID: 19465192.
  4. Geahchan S, Baharlouei P, Rahman A. Marine Collagen: A Promising Biomaterial for Wound Healing, Skin Anti-Aging, and Bone Regeneration. Mar Drugs. 2022 Jan 10;20(1):61. doi: 10.3390/md20010061. PMID: 35049916; PMCID: PMC8780088.
  5. Yang H, Zhang Q, Zhang B, Zhao Y, Wang N. Potential Active Marine Peptides as Anti-Aging Drugs or Drug Candidates. Mar Drugs. 2023 Feb 23;21(3):144. doi: 10.3390/md21030144. PMID: 36976193; PMCID: PMC10053682.
  6. Fu Y, Therkildsen M, Aluko RE, Lametsch R. Exploration of collagen recovered from animal by-products as a precursor of bioactive peptides: Successes and challenges. Crit Rev Food Sci Nutr. 2019;59(13):2011-2027. doi: 10.1080/10408398.2018.1436038. Epub 2018 Mar 1. PMID: 29394086.
  7. Ohara H, Matsumoto H, Ito K, Iwai K, Sato K. Comparison of quantity and structures of hydroxyproline-containing peptides in human blood after oral ingestion of gelatin hydrolysates from different sources. J Agric Food Chem. 2007 Feb 21;55(4):1532-5. doi: 10.1021/jf062834s. Epub 2007 Jan 25. PMID: 17253720.
  8. Proksch E, Segger D, Degwert J, Schunck M, Zague V, Oesser S. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacol Physiol. 2014;27(1):47-55. doi: 10.1159/000351376. Epub 2013 Aug 14. PMID: 23949208.
  9. Bolke L, Schlippe G, Gerß J, Voss W. A Collagen Supplement Improves Skin Hydration, Elasticity, Roughness, and Density: Results of a Randomized, Placebo-Controlled, Blind Study. Nutrients. 2019 Oct 17;11(10):2494. doi: 10.3390/nu11102494. PMID: 31627309; PMCID: PMC6835901.
  10. Sibilla, S., Godfrey, M., Brewer, S., Budh-Raja, A., & Genovese, L. (2015). An overview of the beneficial effects of hydrolysed collagen as a nutraceutical on skin properties: scientific background and clinical studies. The Open Nutraceuticals Journal, 8(1).
  11. Zdzieblik D, Oesser S, Gollhofer A, König D. Improvement of activity-related knee joint discomfort following supplementation of specific collagen peptides. Appl Physiol Nutr Metab. 2017 Jun;42(6):588-595. doi: 10.1139/apnm-2016-0390. Epub 2017 Jan 24. Erratum in: Appl Physiol Nutr Metab. 2017 Nov;42(11):1237. PMID: 28177710.


  • Elijah Redoble

    Elijah enjoys creating content that educates and entertains at the same time. During the health-content writing process, Elijah takes extra care and precaution to craft research-backed articles that are helpful, educational, and relatable to readers from various walks of life. LinkedIn

  • Kim Monasterial, BSN

    Kim is a Registered Nurse and has been a medical freelance writer for more than six years. Starting off as a writer, Kim moved to proofreading and editing all the articles posted on HealthPlugged. She’s an enthusiast for health and wellness, being one to keep herself fit and adventurous for outdoor activities. LinkedIn


Elijah enjoys creating content that educates and entertains at the same time. During the health-content writing process, Elijah takes extra care and precaution to craft research-backed articles that are helpful, educational, and relatable to readers from various walks of life. LinkedIn