Alpha-linolenic acid

Similar term(s): ALA.

An essential fatty acid and the major omega-3 fatty acid found in [plant based] food. Essential fatty acids are not produced by the body and must be present in the diet to maintain health.

The unique biochemical structure of alpha-linolenic acid is important and helps to make it a key player in immunity, vision, cell membranes, and the production of hormone-like compounds.

Source: Online Vitamins Guide Alpha Linolenic Acid (ALA) 

It is most abundant in canola oil.

Source: GreenFacts

Fatty Acids - Omega-3 fatty acids

GreenFacts Summary on Diet and Nutrition Prevention of Chronic Diseases:

• 7.5 How could cardiovascular diseases be prevented?

Diet & Nutrition