The impact of Essential Fatty Acids was discovered by scientists who were trying to determine why some cultures, or populations had much lower rates of heart disease than most others. What they found was surprising and has changed the way that nutritionists, geneticists and health professionals look at the "ideal" human diet.
1. How were Omega-3 fatty acids discovered?
A. https://www.youtube.com/watch?v=YSUfr4KBGRY
2. National Institute of Health (NIH) summary on Omega-3.
A. https://nccih.nih.gov/health/omega3/introduction.htm