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Collagen supplements have become one of the most promoted products in the wellness and beauty industry in recent years, especially on social media, where they are often advertised as the "secret" to a younger look and wrinkle-free skin.
However, British doctor Amir Khan warns that many of the claims related to the effects of collagen are exaggerated and not fully supported by science.
Speaking on Good Morning Britain, Dr. Khan explained that collagen is a protein that the body produces naturally and that forms an important part of the structure of skin, bones, hair and ligaments.
"Over the years, collagen production gradually declines, and it is precisely this fact that the wellness industry uses to promote supplements ," he said.
According to the doctor, the main problem lies in the way the body processes collagen taken through supplements.
"When you take collagen as a supplement, it breaks down into amino acids in the gut. The body then uses them where they are needed most, for hormones, enzymes or other vital processes. There is no guarantee that they will go directly to the skin or hair," said Dr. Khan.
He also cited a 2025 study that analyzed 23 clinical trials on the effects of collagen. Initially, the results suggested improvements in skin hydration and elasticity. But after industry-funded studies of collagen were removed from the analysis, the evidence for any apparent benefits on skin, hair, and nails was unclear.
However, Dr. Khan emphasized that collagen may have a positive impact on people suffering from arthritis or joint problems.
"Collagen may help reduce pain and improve joint function in people with arthritis, but not necessarily in those with healthy joints ," he said.
The British doctor also criticized the growing dependence on supplements, emphasizing that many people are neglecting quality nutrition.
"People often think that a supplement will solve everything, while forgetting the importance of whole, nutrient-rich foods," he stated.
As for natural ways to boost collagen production, Dr. Khan mentioned foods like bone broth, gelatin, and chicken skin, while for vegetarians he recommended plant-based sources of protein like lentils and beans, combined with vitamin C, zinc, and copper.
In the end, he gave a clear message to consumers:
"Collagen is not a miracle cure. It may offer minor improvements in some people, but it will not erase wrinkles or completely transform your appearance," Dr. Khan concluded.
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