All of these oils are high on omega-3's, which are vital and extremely beneficial for the human body. All three of these oils are high in fatty acids, which perform anti-inflammatory functions in the body. The omega-3 oils reduce inflammation by suppressing the proteins that promote it. They also reduce arthritis and joint pain, as dozens of studies have shown that people who consume more of these oils reported less swelling and pain. Furthermore, joint pain and arthritis are caused by inflammation, which is reduced by fatty acids. Finally, omega-3's lower blood pressure and prevent plaque build up, increasing heart health and preventing heart disease. Many studies have shown that people who eat fish and different types of seafood are at a lower risk of contracting some sort of heart disease. These are just the main benefits of the oils you've listed, as they all separately have their own unique pros.