Yeah, also soybean oil would be as useless as canola oil. Among vegetable oils, flaxseed oil is the best source of ALA, while also walnut oil and hemp oil have

Yeah, also soybean oil would be as useless as canola oil. Among vegetable oils, flaxseed oil is the best source of ALA, while also walnut oil and hemp oil have decent amounts. However many humans, especially many men, have a too low capacity for elongating ALA into DHA and EPA, so they may remain deficient in omega-3 fatty acids even when eating decent amounts of ALA from flaxseed oil or the like. Because you normally do not know your own biosynthetic abilities, it is less risky to eat fish oil or Schizochytrium oil, instead of flaxseed oil.