Fish Protein Supplements May Improve Blood Vessel Function in Type 2 Diabetes

This completed clinical trial examined whether fish protein hydrolysates could improve blood vessel function in people with type 2 diabetes. The research targeted endothelial dysfunction, a condition where blood vessels lose their ability to properly dilate due to reduced nitric oxide production, contributing significantly to cardiovascular disease risk in diabetics.

The randomized, placebo-controlled study enrolled 22 participants with type 2 diabetes at the Federal University of Rio de Janeiro. Researchers administered either fish protein hydrolysates or placebo to test acute effects on vascular function. The intervention lasted approximately five months, from October 2017 to March 2018.

Fish protein hydrolysates contain bioactive peptides with demonstrated antioxidant properties and ACE-inhibiting activity, mechanisms that could theoretically improve endothelial function. The study measured both macro- and microvascular responses to assess comprehensive vascular health improvements.

While specific results weren't detailed in the available summary, this research addresses a critical health concern for diabetics. Endothelial dysfunction represents an early marker of cardiovascular disease, and interventions that restore normal blood vessel function could significantly impact long-term health outcomes. The focus on natural, food-derived compounds aligns with growing interest in nutritional approaches to managing diabetes complications and supporting vascular longevity.