It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
A specific human chromosomal landscape
Evolution of Vertebrate Species
The human gustatory system.
Sensory Differences Between Species
Partial map of disease genes on human chromosome 21
Selected Broad Sense Heritability (H2) Values from Human Twin Studies