Marine collagen: benefits, effectiveness and how to choose it well

Marine collagen has become one of the most sought-after dietary supplements in recent years. Praised for its potential effects on the skin, the joints and overall well-being, it appeals to people wishing to preserve their youthful capital as much as to athletes and seniors.

But what exactly is marine collagen? Is it really effective? And how do you choose a quality product? Let's take a closer look.

What is marine collagen?

Collagen is the most abundant protein in the human body. It accounts for nearly 30% of our body's proteins and is involved in the structure of the skin, bones, tendons, ligaments and cartilage.

Marine collagen is extracted mainly from the skin, bones and scales of fish. Once hydrolysed into collagen peptides, it is more easily absorbed by the body.

Why do we lose collagen with age?

From the age of 25, our natural collagen production gradually declines. This decrease is accelerated by several factors:

• natural ageing;
• sun exposure;
• smoking;
• an unbalanced diet and a poor lifestyle;
• stress and lack of sleep;
• age-related hormonal changes;
• sports injuries.

As a result, the skin loses firmness, wrinkles gradually appear, the joints sometimes become more sensitive, bones more fragile, tendon or muscle injuries increase, hair thins and we feel more tired.

What are the main benefits of marine collagen?

Firmer, more hydrated skin

This is probably the best-known benefit. Several studies suggest that regular supplementation with marine collagen peptides may help improve skin elasticity, maintain good hydration, reduce the appearance of wrinkles and promote suppler skin. Collagen does not replace a skincare routine, but it complements a global approach to skin ageing.

Discover Collagen Vital Power ›

Support for the joints

Cartilage is largely made up of collagen. Chondrocytes, the cells that produce joint collagen, need to be stimulated to maintain endogenous collagen density and keep the joint healthy. In some people, particularly athletes or those over 50, supplementation may contribute to joint comfort, alongside suitable physical activity and a balanced diet.

Support for hair and nails

Collagen provides certain amino acids used by the body to make keratin. It also helps anchor the hair at its root and keep it in an environment favourable to good growth. Many users of marine collagen supplements notice less brittle nails and stronger hair after several weeks of use.

An ally for athletes

Athletes particularly appreciate collagen for supporting the tendons, joints and ligaments before exertion, and for promoting recovery after intensive training.

Support for the microbiome

Collagen peptides provide amino acids, notably glycine, proline and hydroxyproline, which take part in the renewal and maintenance of the tissues of the intestinal wall. They help reinforce the integrity of the intestinal barrier by supporting the mucosa's repair mechanisms and the junctions between intestinal cells.

Support for immunity

The amino acids provided by marine collagen peptides, notably glycine, also have anti-inflammatory properties and take part in modulating certain immune responses.

Support for sleep and stress management

Collagen peptides help improve sleep quality and stress management, mainly thanks to their richness in glycine, an amino acid involved in regulating the nervous system. Glycine is associated with better sleep quality, reduced fatigue on waking and has a soothing effect that can promote relaxation.

To learn more about all these effects, discover all the benefits of Collagen Vital Power.

How long does it take to see results?

Patience is essential. Results vary according to age, diet and lifestyle.

• After around 4 weeks: improved skin hydration.
• Between 8 and 12 weeks: gradual improvement in skin elasticity and firmness, better mobility and joint health, and better sports recovery.

When should you take marine collagen?

There is no universally best time: the key is regularity. Many people choose to take it in the morning in a drink, a smoothie or a yoghurt, after a workout or in the evening, depending on their habits. A daily intake is generally recommended.

How do you choose a good marine collagen?

Not all products are equal. To choose well, favour:

• hydrolysed marine collagen peptides;
• a low molecular weight to aid absorption;
• a clearly stated and, ideally, French origin;
• a formulation matching your needs;
• ingredients free from unnecessary additives.

Also make sure you get enough vitamin C through your diet, as it takes part in the proper formation of collagen. You can also discover our full range of marine collagen to drink.

Are there any side effects?

Marine collagen is generally well tolerated. As with any dietary supplement, it is advisable to respect the indicated doses and to seek advice from a healthcare professional in the event of pregnancy, breastfeeding or medical treatment.

Marine collagen or bovine collagen?

Both provide collagen peptides. Marine collagen is, however, particularly appreciated for its richness in type I collagen, found mainly in the skin, and type III, which is also very useful for connective tissues. The choice depends on your needs, dietary preferences and the origin you are looking for.

Frequently asked questions

Does marine collagen make you gain weight?

No. It is low in calories and does not promote weight gain. On the contrary, it may help regulate satiety.

Can you take collagen all year round?

Yes. Many people follow cures lasting several months, or even continuous supplementation, according to the manufacturer's and the healthcare professional's recommendations.

At what age should you start?

From the age of 25 to 30, natural production begins to decline. Many people choose to start supplementation from 35 or 40, as a preventive measure.

In summary

Marine collagen is today one of the most studied dietary supplements for supporting the health of the skin, joints and connective tissues. Combined with a balanced diet, good hydration and a suitable lifestyle, it can be a valuable ally in accompanying natural ageing. Like any dietary supplement, it replaces neither a varied diet nor medical follow-up when necessary.