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.
Eat spinach with tomatoes to allow better iron absorption. Iron is an essential mineral needed by every cell in your body. Most of your iron supply is found in your red blood cells, which carry and store oxygen. You can get iron from a variety of foods, including meats, vegetables, spices and beans. Iron from animal sources is called heme iron, and is more easily absorbed than plant-based iron, which is called non-heme. Some of the best heme iron sources include uncommon foods such as chicken liver and oysters. Non-heme, however, is readily available in everyday foods you probably already have in your refrigerator or pantry.