Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Fish protein, particularly from sources like fish peptides and hydrolyzed fish protein, has gained scientific attention for its potential benefits in supporting circulatory health. The primary mechanisms proposed relate to bioactive peptides present in fish protein, which have been shown to possess antihypertensive, antioxidant, and anti-inflammatory properties. Several animal and human studies have demonstrated that specific peptides derived from fish protein can inhibit angiotensin-converting enzyme (ACE), thereby lowering blood pressure—a key factor in improving circulation. Additionally, fish protein hydrolysates may help improve endothelial function and reduce arterial stiffness, further supporting circulatory health.

The evidence is not as robust as that for fish oil (omega-3 fatty acids), which are more widely recognized for cardiovascular benefits. However, a handful of small clinical trials and experimental studies indicate that regular consumption of fish protein or its hydrolysates can result in modest improvements in blood pressure and vascular function. For example, a randomized controlled trial published in the Journal of Nutritional Biochemistry (2016) found that daily supplementation with fish protein hydrolysate improved arterial elasticity in older adults. While these findings are promising, larger and longer-term studies are needed to confirm the benefits and determine optimal dosing.

In summary, there is moderate scientific support for the use of fish protein in improving circulation, mainly due to its bioactive peptides' antihypertensive effects. It should not be considered a primary treatment, but may serve as a complementary approach for circulatory health.

More about fish protein
More about Circulation (poor)

Other ingredients used for Circulation (poor)

Other health conditions supported by fish protein

Products containing fish protein