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The familiar sounds of your heart are made by the heart's valves as they open and close.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.