There is evidence that small peptides, ranging in size from 2 to 20 amino acid residues, have revealed promising antihypertensive properties, and this type of peptides can be obtained from seaweed protein hydrolysates [35].

Seaweeds, in addition to their use as food, are now unanimously acknowledged as an invaluable source of new natural products that may hold noteworthy leads for future drug discovery and development, including in the prevention and/or treatment of the cardiovascular risk factors. Several compounds including peptides, phlorotannins, polysaccharides, carotenoids, and sterols, isolated from brown, red and green macroalgae exhibit significant anti-hypertensive and anti-obesity properties.