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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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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.