No. The idea that Omega-3s “thin the blood” is based on a false conclusion from early research over 30 years ago. Those studies observed minor changes in laboratory platelet markers and mistakenly linked them to impaired clotting.

More recent and robust human studies have shown that Omega-3s, including DHA from algae oil, do not act as blood thinners, do not interfere with normal clot formation, and do not increase bleeding risk at typical dietary or supplemental intakes.

DHA is a structural fat used by the body as part of normal cell function. It supports healthy blood flow and platelet behaviour without altering the body’s natural clotting mechanisms. As a result, DHA is not classified as an anticoagulant and is considered safe for regular use across all stages of life.