While not a good tool for diagnosing asthma, peak flow, and peak flow meters are good to monitor asthma over time. You may see declines in your peak flow prior to developing significant symptoms. This will allow you to alter your treatment regimen based on your asthma care plan.
Increase your intake of calcium, which inhibits the absorption of iron in the body. Eat more milk products, green leafy vegetables, oats and cereals (check to see that these are not fortified with iron). Milk products, such as ice cream, cheese, yogurt, are rich in calcium.
Some types of liver contain more iron than others. You don't need to ever eat liver to get your daily dose of iron; many foods, including meat, poultry, fish and vegetables contain iron. Liver does serve as an excellent source of dietary iron, but you can easily meet your iron needs without ever eating it.