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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
Blood is approximately twice as thick as water because of the cells and other components found in it.