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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Approximately 500,000 babies are born each year in the United States to teenage mothers.