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:
From Wikipedia, the free encyclopedia. Myasthenia gravis (from Greek Î¼ÏÏ muscle, á¼ÏÎ¸Î­Î½ÎµÎ¹Î± weakness, and Latin: gravis serious; abbreviated MG) is a neuromuscular disease that leads to fluctuating muscle weakness and fatigue.yasthenia is treated with medications such as acetylcholinesterase inhibitors or immunosuppressants, and, in selected cases, thymectomy (surgical removal of the thymus gland). The disease is diagnosed in 3 to 30 people per million per year.