2-hydroxyoleic acid for use as a medicament.

2-hydroxyoleic acid for use as a medicament. The invention relates to 2-hydroxyoleic acid as an antitumor agent, as an agent with hypotensive activity and as agents that can induce a reduction in body weight. 2- hydroxyoleic acid has application as a regulator of G protein activity, as well as of the molecular entities of their transduction pathway. It also relates to the use of 2-hydroxyoleic for the manufacture of medicaments for the treatment of cancer, cardiovascular diseases and obese subjects acid.