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.
Lutein and Zeaxanthin. Romaine lettuce contains 1,087 mgs of lutein and zeaxanthin â carotenoids that filter harmful high-energy blue wavelengths of light on the retina, says the American Optometric Association (AOA). Iceberg lettuce only contains 199 mgs of these two nutrients. The recommended amount of lutein is six to 10 mg per day, whereas the dose for zeaxanthin is 2 mg per day, to maximize the health benefits for your eyes.