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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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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.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.