How is asthma caused and how can we keep our bomes healthy? Mrs Atul, Mussoorie   Dear Ms. Atul, Please find below a link that will be perfect to explain to Ishan about Asthma. http://nutritionvista.com/Kids-Corner/Tell-Me-Why/TMWs-12/Default.aspx Also, http://www.nlm.nih.gov/medlineplus/asthmainchildren.html is a very good site to visit. For Bone Health, here is another link: http://www.niams.nih.gov/Health_Info/Bone/Bone_Health/Nutrition/default.asp http://www.niams.nih.gov/Health_Info/Bone/Bone_Health/Juvenile/default.asp If you have a specific question, please do write back To Dr. Khubchandani. Sincerely, The NV Team