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:
0.3 Grams (g) Milligrams : The milligram (symbol mg) is a unit of mass, equal to 1/000 of a gram, and 1/10000000 of a kilogram ( also written 1E-6 kg). Grams : The gram (SI unit symbol: g) is a metric system unit of mass. It is equal to one one-thousandth of the SI base unit, the kilogram, or 1E3 kg.