Die Wirkung von Kollagen: Mythen versus Fakten

The Real Effects of Collagen: Myths vs. Facts

In the quest for improved health and vitality, collagen has soared in popularity, becoming a buzzword in the realms of beauty, nutrition, and healthcare. This surge in attention is not without reason; studies have increasingly pointed to the significant effects of collagen on the body, including its potential to enhance skin elasticity, support joint function, and even aid in bone density preservation. However, amidst the growing interest, a mix of myths and facts about collagen and its benefits has also emerged, making it crucial to separate truth from fiction for those considering collagen supplements as part of their wellness regimen.

This article aims to provide a clear, evidence-based examination of the real effects of collagen, focusing on the scientifically substantiated health benefits such as its role in osteoarthritis management, alleviation of joint pain, and contributions to wound healing. Additionally, it will address the potential side effects associated with collagen intake, ensuring readers are well-informed about both the positives and the precautions. Whether you're considering collagen for its beauty benefits, its impact on bone density, or its therapeutic potential, this comprehensive overview will guide you through the myths and facts, empowering you with the knowledge needed to make informed decisions about incorporating collagen supplements into your health and wellness routines.


Moleküle (illustrativ)

Understanding Collagen

What is Collagen?

Collagen is the most abundant protein in the human body, found in various tissues such as skin, bones, muscles, tendons, and ligaments. It plays a crucial role in providing structural support and strength to these tissues.[1,2,3]

Types of collagen

There are at least 28 different types of collagen, each serving unique functions and found in different parts of the body. The most common types include:

Type I: Predominantly located in skin, bones, and tendons.

Type II: Mainly found in cartilage.

Type III: Present in reticular fibers within organs and blood vessels.

Type IV: Exists in the layers of the basal lamina.

Type V: Located in cell surfaces, hair, and the placenta[1,3].


Natural Collagen Production

The body naturally synthesizes collagen by combining amino acids, with the production gradually declining with age. Factors such as sun exposure, smoking, and poor dietary choices can further decrease collagen levels. Essential nutrients like vitamin C, zinc, and copper are vital for maintaining optimal collagen synthesis. [1,2,3] 


starke Gelenke

Health Benefits of Collagen

Skin Health and Elasticity

Collagen supplements have been shown to improve skin hydration and elasticity, particularly in older individuals. Studies indicate that oral collagen can reduce the appearance of wrinkles and enhance skin moisture. One specific study found that women who consumed daily collagen supplements experienced significant improvements in skin hydration and elasticity after just 8 weeks. [4,5]

Joint and Bone Health

Collagen plays a crucial role in maintaining bone and joint health. It helps to preserve the cartilage that cushions joints, potentially reducing the risk of osteoarthritis. Additionally, collagen supplementation has been linked to increased bone mineral density (BMD) in postmenopausal women, which can help prevent osteoporosis. Clinical trials have demonstrated that daily intake of collagen peptides can lead to improvements in BMD and overall bone health. [3]

Muscle and Heart Health

Collagen supplementation may also benefit muscle and heart health. Studies suggest that collagen peptides can support muscle growth and strength, particularly when combined with strength training. Furthermore, collagen provides structural support to arteries, potentially reducing the risk of atherosclerosis and associated cardiovascular diseases. A study involving healthy adults showed that daily collagen intake significantly improved artery elasticity and increased levels of HDL (good) cholesterol. [4,3,8] 



Potential Side Effects of Collagen

Common Side Effects

Collagen supplements are generally safe, but they can cause some mild side effects. These include digestive issues such as diarrhea, a feeling of heaviness in the stomach, and less commonly, constipation and heartburn [9,10,11]. Some individuals may also experience skin reactions like rashes or acne, particularly if they have sensitivities to the ingredients in collagen supplements [9]. Additionally, a bad taste in the mouth has been reported by some users. [10]


Individuals considering collagen supplements should consult with healthcare professionals, especially those who are pregnant, breastfeeding, or have existing health conditions. The presence of other ingredients in collagen supplements, like high levels of vitamins or herbal extracts, might interact with medications or pose additional health risks [12]. It's also advisable to monitor collagen intake to avoid excessive consumption, which can lead to some of the mentioned side effects [9,10] 


Kollagen Knochengesundheit Pulver Front


Throughout this exploration of collagen and its myriad of health implications, we have navigated the complexities separating fact from fiction to offer a comprehensive understanding of collagen's true benefits. From enhancing skin elasticity and supporting joint health to its potential impacts on bone density and cardiovascular wellness, the science-backed insights shared underscore the significant role collagen can play in a well-rounded health regimen. However, the conversation surrounding collagen is nuanced, emphasizing the importance of informed decisions based on individual health contexts and the need for further research in specific areas.

While the allure of collagen supplements presents an appealing approach to addressing common health concerns associated with aging and lifestyle, it is important to consider the potential side effects and consult healthcare providers to tailor any supplement intake to one's unique health profile. As the field continues to evolve, staying informed about the latest research findings (e.g. by reading our blog) will empower individuals to make choices that align with their health aspirations and lifestyle, ensuring that the pursuit of enhanced well-being through collagen supplementation is both safe and effective.


  1. Does collagen supplementation have any scientific backing?

Yes, collagen supplementation has been shown to have beneficial effects. It can improve skin hydration and elasticity, potentially slowing down skin aging. Additionally, it has shown slight improvements in reducing joint pain for athletes and may alleviate pain associated with osteoarthritis.

  1. What are the confirmed benefits of taking collagen?

Studies indicate that collagen peptides may effectively enhance skin hydration and elasticity. They are also considered possibly effective in alleviating pain and improving joint function in individuals suffering from knee osteoarthritis.

  1. Has the effectiveness of collagen for skin health been scientifically proven?

As the body ages, it produces less collagen, which can lead to dry skin and wrinkles. Research suggests that collagen peptides or supplements can help mitigate the aging effects on the skin by decreasing wrinkles and dryness.


[1] - https://www.webmd.com/skin-problems-and-treatments/ss/slideshow-collagen-and-your-body
[2] - https://www.medicalnewstoday.com/articles/317151
[3] - https://my.clevelandclinic.org/health/articles/23089-collagen
[4] - https://www.healthline.com/nutrition/collagen-benefits
[5] - https://www.webmd.com/diet/collagen-health-benefits
[6] - https://www.fepblue.org/news/2019/05/20/13/12/5-health-benefits-of-collagen-supplements
[7] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8706311/
[8] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3003457/
[9] - https://www.medicinenet.com/what_are_the_side_effects_of_taking_collagen/article.htm
[10] - https://www.verywellhealth.com/collagen-supplements-for-skin-89940
[11] - https://www.medicalnewstoday.com/articles/325344
[12] - https://www.healthline.com/nutrition/collagen

Image credits: Towfiqu barbhuiya, CHUTTERSNAP, David Clode, Brandi Redd on Unsplash

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