An increased AST level is usually a sign of liver disease. Liver disease is even more likely when the levels of substances checked by other liver blood tests have also increased. An increased AST level may be due to any of the following:
In order to keep itself fresh, the lettuce gives off carbon dioxide, causing a slight odour. This carbon dioxide is not harmful and the odour should disappear quickly once the salad package is opened.
Food manufacturers use an array of food preservatives to keep food fresh and stable, as well as to extend shelf life and prevent natural decay. One of the most common food preservatives is salt, suitable for many uses such as preserving meat, canned vegetables and fruits, as well as frozen desserts and vegetables.