Olive oil:
Is widely known for it's benefits for heart health and longevity owing to the many studies carried out regarding the Mediterranean diet. This oil contains mono-unsaturated fatty acids, mainly oleic acid (a.k.a omega 9).
This composition of fatty acids supports reduction of the harmful cholesterol which aids in prevention of heart disease, blood disease  and supports blood vessel health such as atherosclerosis. Among many other benefits, olive oil encourages gall badder proper functioning, aids in vitamin C uptake and contains vitamin E and antioxidants.