This video discusses the significant benefits of omega-3 fatty acids, particularly focusing on the omega-3 index and its correlation with increased lifespan and reduced health risks. The speaker highlights research indicating that higher omega-3 levels are linked to a five-year increase in life expectancy and reduced risk of Alzheimer's disease, even mitigating some of the negative effects of smoking. The video also explores practical ways to increase omega-3 intake through supplementation.