Collagen is the most abundant structural protein in the human body and constitutes around 25% to 30% of total protein. It is an essential part of the skin, bones, cartilage and tendons.
With aging, its production progressively decreaseswhich translates into loss of skin firmness, wrinkles and less elasticity. This process also impacts joints and bone density.
In recent years, gelatin and collagen peptides derived from bovine sources have gained scientific interest for their potential regenerative effect on the skin.
New clinical studies evaluated its impact on hydration, elasticity and skin density, providing evidence on its benefits in healthy aging.
Most of the investigations were carried out with hydrolyzed collagena form fragmented into smaller peptides that facilitates its intestinal absorption. These are not conventional household gelatin, but standardized supplements in specific doses.
A meta-analysis published in the scientific journal Nutrients analyzed 26 clinical trials with more than 1,700 participants and concluded that oral supplementation with hydrolyzed collagen for between 8 and 12 weeks was associated with significant improvements in hydration and skin elasticity compared to placebo.
From this work, multiple benefits are identified:
1. Significant improvement in hydration
Placebo-controlled clinical trials demonstrated that daily consumption of collagen peptides for 12 weeks increases skin hydration levels measured with precision equipment (corneometry). This results in softer skin with better water retention capacity.
2. Greater elasticity and firmness
Elasticity, assessed by suction and stretch tests (cutometry), showed notable improvements after continuous supplementation. This effect is related to the stimulation of the production of type I and III collagen, essential for the dermal structure.
3. Reduction of roughness and fine lines
Studies observed a decrease in wrinkle depth and improvement in surface texture. Regeneration of the deep structure of the skin contributes to a more uniform appearance.
4. Increased skin density
Ultrasound studies of the skin show greater dermal density after 12 weeks of intervention. This suggests structural strengthening and greater internal support.
5. Effects sustained over time
Some trials included post-intervention follow-up and found that benefits were maintained weeks after consumption ended, indicating a prolonged impact.
6. Complementary antioxidant action
When collagen is combined with vitamin C, zinc, biotin or vitamin E, the effects can be enhanced, since these nutrients participate in the synthesis and protection of collagen against oxidative stress.
7. Comprehensive skin-joint benefit
Although the main focus is on the skin, parallel research also shows a reduction in markers of cartilage degradation and functional improvements in people with osteoarthritis, which reinforces the structural role of collagen in connective tissues.
8. Possible metabolic support
Recent trials analyzed its effect on body composition and satiety. In overweight people, supplementation showed reduction in body fat and improvement in metabolic markers, which could indirectly contribute to general well-being.
In summary, the accumulated scientific evidence indicates that gelatin and, especially, bovine collagen peptides present positive effects on hydration, elasticity, density and texture of the skin.
Integrated within a balanced diet and accompanied by vitamin Ccan be part of strategies aimed at healthy aging and comprehensive care of skin tissue.
