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Asthma cases in Americans are about 75% higher today than they were in 1980.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.