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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.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.