What else in their environment could be contributing to their current problems? Could there be a mold issue in your home? Do you have carpets? Is it a newer home with formaldahyde in the construction materials? What kind of ventilation system do you use? How is your home heated? Do you have pets? Do you use everyday detergents, soaps, shampoos? What other chemicals are used around the house? Anyone smoking? Hair products? Do you have indoor house plants?(often moldy soil) What is your outdoor environment like? Do you live near busy roads or any industry? Do you use a built in vacuum system that vents to the outside?(this is a good practice btw) As far as the internal environment goes, have your children been vaacinated recently? Any Antibiotic
use? There are many possiblities. I would consider consulting with a good environmental doctor. It would be good to identify what is wreaking havok on their immune systems so you can remove these from the environment so their cleansing/detox protocols can have an impact without causing more undue stress.
Read up on "total load".
TOTAL LOAD refers to the different impacts on your system. Think of your immune system as a rain barrel, all of the stresses fill it up. The total load is reached but you may not be aware of the different things making you ill.
Here are some sites you may want to check out in regards to environmental illness/medicine.
Sherry Rogers Article
Sherry Rogers Books
Great Resource Book: The Healthy House