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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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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.