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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.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.


