Because the body converts all dietary sources of vitamin A into retinol, 1 mcg of physiologically available retinol is equivalent to the following amounts from dietary sources: 1 mcg of retinol, 12 mcg of beta-carotene, and 24 mcg of alpha-carotene or beta-cryptoxanthin.
The body needs more omega-3 than omega-6 to reduce the risk of heart disease and inflammation. Since olive oil is higher in omega-3 than other oils, sardines in olive oil contain more omega-3 than sardines in water; however, the sardines in water are still the better option with lower amounts of cholesterol and fat.
What is a Sardine? 1  Sardines -- a type of small fish in the herring family -- are rich in calcium and other minerals, vitamin D, and omega-3 fatty acids.he sardine is a small, silvery fish with a protruding snout and large mouth. Sardine species can be found in northern and southern waters, and favor estuaries or inter-tidal zones.