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.
BHA and BHT. Butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) are used as a food preservative, as well as to preserve fats and oils in cosmetics and pharmaceuticals. BHA is commonly found in chewing gum, butter, cereals, snack foods and beer.