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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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The longest a person has survived after a heart transplant is 24 years.
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There are more bacteria in your mouth than there are people in the world.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.