Base is used broadly in both literal and figurative contexts: the wide base of the pyramid; a party seeking to expand its power base. Basis is used in a nonphysical sense: Healthy scepticism is the basis of all accurate observation (Arthur Conan Doyle).
Omega-3 fats also lower blood pressure and heart rate, improve blood vessel function, and, at higher doses, lower triglycerides and may ease inflammation, which plays a role in the development of atherosclerosis. Several large trials have evaluated the effect of fish or fish oils on heart disease.
You might not have known this, but your diet has a lot to do with the way that you feel, and the way that your body deals with joint inflammation. Omega-6 fatty acids have been found to aggravate joint inflammation, and are most commonly found in foods that encourage obesity- another aggravator of joint inflammation.