Oil doesn't suddenly go rancid, it slowly becomes more oxidized and as it does, the flavor suffers. Different oils age at different rates. Some olive varieties make oil with more natural antioxidants which resist ageing. These oils may be good for up to 3-4 years if properly stored in unopened containers. Other oils, particularly unfiltered oils, may be unpalatable in a year even if stored well. A two year old olive oil may taste rancid to some while others don't mind it.
Hepatitis, inflammation of the liver, is caused by various viruses (viral hepatitis) also by some liver toxins (e.g. alcoholic hepatitis), autoimmunity (autoimmune hepatitis) or hereditary conditions.
Knowledge center. Cardiovascular diseases include illnesses that involve the blood vessels (veins, arteries and capillaries) or the heart, or both-diseases that affect the cardiovascular system. The cardiovascular system, also called the circulatory system, is the system that moves blood throughout the human body.It is composed of the heart, arteries, veins, and capillaries. It transports oxygenated blood from the lungs and heart throughout the whole body through the arteries.xamples of diseases that affect the cardiovascular system. 1  Cardiac diseases (Heart diseases) - examples include: - 2  Angina (considered as both a cardiac and vascular disease). - 3  Arrhythmia (problems with the heartbeat, irregular heartbeat). - 4  Congenital heart disease. - 5  Coronary artery disease (CAD).