Does Collagen Really Reverse Aging—or Is It Just Hype?

The interest in **collagen** has grown in recent years. Many people seek this protein to improve the appearance of the skin or strengthen joints, bones, hair, and nails. **The market offers different methods**: drinkable supplements, creams, and injectable treatments. However, doubts about their effectiveness persist among the general public and health professionals.

**You might also like: Sweet potato or regular potato: nutrients, cooking methods, and the dilemma of a healthy diet** Collagen is **the most abundant protein in the human body** and is an essential part of the skin and musculoskeletal system's structure. **Starting around the age of 25 or 30, the amount of collagen decreases naturally each year.** This reduction contributes to the appearance of wrinkles, loss of skin firmness, and weakness in the joints or bones. Factors such as sun exposure, diet, and stress can accelerate the loss. This situation drives many people to seek alternatives to maintain or recover collagen levels, although not all products have solid scientific backing.

According to testimonies collected by *BBC*, **some people notice aesthetic improvements after consuming collagen supplements**. Kimberlie Smith, a 33-year-old mother, claimed to see more brightness in her skin and hair after taking liquid marine collagen. However, dermatologist Emma Wedgeworth, a consultant in London, clarified that science still does not provide conclusive evidence. She mentioned that ingested collagen must survive the digestive process, and companies have developed fragmented versions, known as collagen peptides, to facilitate passage into the bloodstream. However, Wedgeworth noted that there is only a theory, not a certainty, about the utilization of these peptides in the skin.

**You might also like: What is 'brain rot' and how excessive use of social media impacts adolescent mental health** Regarding the use of creams, **the specialist indicated that there is no evidence that topical collagen penetrates beyond the skin's surface layer**. For this reason, experts do not recommend collagen creams to achieve changes in the dermis or deep skin structure. Research shows that collagen applied to the skin does not manage to pass through the necessary layers to improve firmness, wrinkles, or elasticity.

On sources, the main available options are **marine collagen** (from fish), **bovine** (from cows), and **so-called 'vegan' alternatives**, which actually contain other amino acids and vitamins but no real collagen, as explained by the dermatologist. Furthermore, she mentioned that marine collagen provides a larger amount of type one, the most abundant in the skin and connective tissues.

**You might also like: What happens to the body when pistachios are eaten every day** **Ali Watson**, a neuroanesthesiologist cited by *BBC*, has been consuming collagen powder for two years and also gives it to her dog. She explained that she seeks to protect her joints due to intense physical activity, although she admitted not having noticed significant changes beyond some aesthetic improvement and shine in the skin and hair. **Many consumers, without evidence of major results, maintain the routine of supplements** due to expectation or subjective effect.

On the other hand, **Faisal Ali**, a dermatologist at Mid Cheshire Hospital, warned about the existence of studies with conflicting interests and opposite results. **Industry-funded studies often show improvements in hydration, wrinkles, and elasticity**, but studies without commercial influence do not confirm these effects in people. Ali concluded that there is no solid evidence that collagen taken or applied topically causes significant changes in the skin, hair, or joints.

According to an analysis by *National Geographic*, **collagen production is indispensable for multiple functions in the body**. However, experts like Sonya Kenkare, a dermatologist at Rush University in Chicago, maintain that there is not enough evidence to recommend supplements to all patients. Although studies on the skin reflect modest benefits, they cannot separate the impact of collagen from other ingredients present in the evaluated products. Ingested collagen, according to **Julia Zumpano**, a dietitian at the Cleveland Clinic, breaks down into amino acids during digestion. **The body then uses them according to its own physiological priorities.** Therefore, it's not guaranteed that supplements directly benefit the skin. Additionally, they lack strict regulation on content and purity, adding uncertainty to the final result.

Some studies associate collagen consumption with a moderate improvement in joint mobility and pain reduction in athletes and people with osteoarthritis. **However, specialists insist that the evidence is not sufficient** to recommend supplements as a substitute for healthy habits, or to solve complex joint or skin health issues.

According to **Leire Hernández**, a specialist in aesthetic medicine, to consider a supplement effective, it should have at least ten grams of collagen and backing in independent scientific publications. She recommended consulting a professional and verifying the product's quality before starting consumption.

Professor Faisal Ali added that there are clinical methods that activate collagen production in the skin, such as micro-needling and laser. **These treatments stimulate the skin's natural collagen renewal**, although they tend to be expensive and require medical supervision.

Experts prioritize the use of sunscreen, a balanced diet, and quitting smoking to protect the skin from natural aging. **They claim that these habits provide proven benefits** and outweigh any promises from collagen supplements.

So far, science has not found compelling evidence that collagen supplements, creams, or injections guarantee significant or lasting improvement. Current recommendations emphasize preventive care and **consulting specialists before investing in trendy products or procedures.**

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