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:
What is the difference between milligrams (mg) and millilitres (mL)? Milligrams (mg) measure weight, and Millilitres (ml) measure volume of liquid. The part of the word 'Milli' comes from the latin mille, which means one thousand. There are 1,000 milligrams in a gram, and 1,000 millilitres in a litre of liquid. Often people will tell you how much medicine they have taken in Millilitres, but the amount of liquid doesn't tell you anything much, unless you know how much the drug dissolved in the liquid weighed...