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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
There are 60,000 miles of blood vessels in every adult human.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.