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:
MG vs. MCG. The terms âmgâ and âmcgâ are both abbreviations for small units of measurement in the metric system. The term âmgâ stands for the measurement of âmilligrams,â while âmcgâ stands for âmicrograms.â Both units are used to measure an objectâs mass and to indicate an objectâs weight. With reference to other units of measurement, a mcg is equal to .001 mg. This implies that the microgram is smaller compared to a milligram.