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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
Thyroid conditions may make getting pregnant impossible.
One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
Vaccines prevent between 2.5 and 4 million deaths every year.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.