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Friday, 5/6/2026 | 16:02 GMT+7

4 common misconceptions about collagen

Collagen is only necessary for women, declines with age, or young people do not need supplementation are common misunderstandings about this protein.

Collagen is only necessary in old age

According to the Times of India, a common misconception is that collagen is only beneficial for older individuals. In reality, collagen provides essential amino acids for keratin formation, a vital component of hair and nails. It also contributes to maintaining healthy skin, hair, and nails across all age groups.

From around the age of 30, the body's collagen synthesis begins to decline. This leads to more noticeable signs of aging, such as fine wrinkles, dry skin, and reduced elasticity. Weak, slow-growing hair or brittle, easily broken nails can also indicate collagen depletion.

Collagen is exclusively for women

The idea that collagen is exclusively for women is inaccurate. As a protein making up about 30% of the body's total protein, collagen plays a vital role for both men and women. It is integral to the structure of skin, bones, cartilage, tendons, and ligaments, supporting the health of skin, joints, and muscles. Thus, everyone requires collagen to maintain crucial bodily functions and structures.

Age is the only factor affecting collagen

While age is a significant factor in collagen decline, it is not the sole cause. Beyond natural aging, various environmental and lifestyle factors can accelerate collagen loss. These commonly include sun exposure, smoking, and consuming too much sugar.

Extensive sun exposure is a primary cause of collagen damage. UV rays, particularly UVA, can penetrate deep into the dermis, disrupting collagen structures and hindering the production of new collagen. This leads to wrinkles, sagging skin, and premature aging.

Smoking also accelerates collagen degradation. Chemicals in cigarette smoke damage collagen and elastin fibers, decreasing skin elasticity and promoting earlier wrinkle formation.

A diet high in sugar can promote glycation, a reaction that stiffens collagen fibers and reduces their flexibility. This not only accelerates skin aging but also diminishes the body's capacity to produce new collagen, according to WebMD.

Collagen plays a role in many bodily functions. AI-generated image

Collagen supplementation prevents all diseases

The idea that "collagen supplementation prevents all diseases" is inaccurate. While collagen is a vital protein involved in the structure of skin, tendons, cartilage, bones, and other connective tissues, it is not a "miracle cure" capable of treating or preventing every illness.

Collagen supplementation is also not suitable for everyone. Individuals with kidney disease, for example, should consult a doctor before using collagen supplements, as excessive protein intake may be inappropriate in certain situations.

To support the body's collagen synthesis, maintaining a balanced diet rich in protein-rich foods such as: chicken, fish, beef, eggs, milk, and legumes is recommended. Vitamin C, zinc, and other micronutrients found in citrus fruits, tomatoes, and leafy green vegetables also aid the body's natural collagen production.

Le Nguyen (Compiled)

Readers can submit nutrition questions here for a doctor's response.
By VnExpress: https://vnexpress.net/4-lam-tuong-thuong-gap-ve-collagen-5082278.html
Tags: collagen nutrition

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