There are many causes of constipation, for example, medications; poor bowel habits; low fiber diets; possibly abuse of laxatives; hormonal disorders; diseases primarily of other parts of the body that also affect the colon; and high levels of estrogen and progesterone during pregnancy.
mg: Abbreviation for milligram, a unit of measurement of mass in the metric system equal to a thousandth of a gram. A gram is equal to the mass of one milliliter, one thousandth of a liter, of water at 4 degrees C. MG (in capital letters) is the abbreviation for the disease myasthenia gravis. Search MedTerms:
mc is a medical abbreviation for micro- meaning one millionth of.. The S.I. prefix for micro- is , which doesn't appear on most pharmacists' keyboards; hence the usage of mc instead. So, 1 mcg is the same as 1 g - one microgram or one millionth of a gram.. 1 g = 1000 mg. 1 mg = 1000 mcg (g)