Definition of tush. : a long pointed tooth; especially : a horse's canine.
Common causes of low blood sugar include the following: 1  Overmedication with insulin or antidiabetic pills (for example, sulfonylurea drugs) 2  Use of medications such as beta blockers, pentamidine, and sulfamethoxazole and trimethoprim (Bactrim, Septra) 3  Use of alcohol.  Missed meals.
Research has shown that acute consumption increases insulin secretion, causing low blood sugar (hypoglycemia), and can also impair the hormonal response that would normally rectify the low blood sugar. Drinking as little as 2 ounces of alcohol on an empty stomach can lead to very low blood sugar levels.