Dialectic is a formal system of reasoning that arrives at the truth through the exchange of logical arguments. Dialectic is a process of examining an issue using very careful steps. A thesis, or argument, is offered, followed by the antithesis, or counterargument. The goal is to extract the best points from each of these to form a synthesis..
Other causes of unintentional weight loss include: 1  cancer. 2  hyperthyroidism (overactive thyroid gland). 3  hypothyroidism (underactive thyroid gland). 4  abdominal infection. 5  gastroenteritis. 6  malnutrition. 7  dementia. 8  Celiac disease. 9  HIV/AIDS.
WebMD explains the possible causes of sudden weight gain, when there are no changes in diet or exercise. Learn about the effects of certain medications, some medical conditions, sleep issues, and more.