As asked, the question is far to complex to answer because there are too many variables to manage to get a "correct" or even a "best guess" answer. Use the link to the Wikipedia post on lead poisoning and begin your studies there.
A class of antibodies that cause allergies are allergens. Allergens are a foreign substance that causes an allergic reaction in the body.
Yes
Harmful advertisers.
Allergology is the study of the causes and treatment of allergies.
This is usually an indication that you have an allergy or allergies and you should see your doctor to be tested for your allergies.
there are many harmful causes of nuclear weapons because whole hiroshima was destroyed of it
Borax detergent causes liver cancers if consumed for a long time.
Stress. Food additives. Food allergies.
Cholera is harmful; it causes severe diarrhea which may lead to dehydration and death.
Sulfur-smelling burps indicate improper digestion in the stomach. The gastric juices may not be working effectively, which may be due to certain food combinations or allergies. Another possible reason would be that the food consumed is not sanitary.
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All about allergy http://free-health-recipes.blogspot.com/