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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
There are 20 feet of blood vessels in each square inch of human skin.
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.