In recent decades, nutrition has become one of the areas of greatest interest within preventive medicine and the promotion of healthy aging. Among the wide range of supplements available, those based on fish oil and vitamin E stand out for their ability to positively influence cardiovascular, brain, and immune health, as well as to combat cellular aging processes. Their popularity is no coincidence: both compounds have been extensively researched, and their regular use has shown benefits that go beyond the mere prevention of nutritional deficiencies. This article examines in detail the properties of fish oil and vitamin E, their synergies, the...