Does omega-3 improve wound healing?
In brief:
In a rat study, an omega-3–weighted fatty acid supplement did not speed up wound closure, but the quality of the wound tissue was better (more new blood vessels and more neatly organized collagen).
What was studied?
An experimental animal study published in the journal Nutrients evaluated how fat emulsions with two different n-3:n-6 ratios affect skin wound healing. Thirty male Wistar rats were divided into three groups: two groups received a plant-based 20% fat emulsion (n-3:n-6 1.4:1 or 4.3:1, dose 1 mL/kg/day), and the control group received water. Supplementation was started one week before a full-thickness skin excision on the back and continued for one week after the wound was created. Assessments were made of wound closure, markers of oxidative stress, the plasma fatty acid profile, and the ultrastructure of the wound tissue.
- Thirty rats were divided into three groups.
- Two groups received omega-3 and omega-6 fatty acids in different ratios, and the third group did not receive additional fats.
- The rats were given a small, standardized skin injury on the back. The supplement was administered for one week before the wound and for one week after it.
- Two things were monitored:
- how quickly the wound closed
- the quality of the healing tissue (number of blood vessels, collagen organization, and markers of oxidative stress in the body)
- how quickly the wound closed
What was found?
Speed: The wounds did not close faster with the omega-3–weighted supplement.
Quality: The omega-3–weighted groups developed higher-quality new tissue (more blood vessels, a cleaner collagen structure).
Blood values: The supplement shifted the fatty acid profile as expected toward omega-3 and indicated slightly lower oxidative stress.
What does this mean in practice?
- An omega-3–weighted supplement may support the quality of wound tissue, even if it does not necessarily speed up wound closure.
- Quality matters: well-formed, strong tissue can mean a more durable end result.
Source: Hokynková A, Nováková M, Babula P, et al. Fatty Acid Supplementation Affects Skin Wound Healing in a Rat Model. Nutrients. 2022;14(11):2245.
