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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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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.