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Blood is approximately twice as thick as water because of the cells and other components found in it.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

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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.

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