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… immune system may attack and damage the stomach lining. Low levels of iron or vitamin B12. What are the symptoms? … immune system may attack and damage the stomach lining. Low levels of iron or vitamin B12. What are the symptoms? …
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… acne may be caused partly by higher-than-normal hormone levels. Acne vulgaris. The most common type of acne is acne … acne may be caused partly by higher-than-normal hormone levels. Acne vulgaris. The most common type of acne is acne …
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… during pregnancy. They may be caused by high estrogen levels. These infections aren't a risk to the pregnancy. But … during pregnancy. They may be caused by high estrogen levels. These infections aren't a risk to the pregnancy. But …
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… the lungs by panting and being too active. Lower oxygen levels can also change your normal good judgment, such as … the lungs by panting and being too active. Lower oxygen levels can also change your normal good judgment, such as …
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