The character of Sheldon Cooper was inspired by a computer programmer personally known to series co-creator Bill Prady. He is named in honor of actor/producer Sheldon Leonard and Nobel Prize Laureate Leon Cooper.
The infection is caused by bacteria. However, excessive use may irritate you. Soda also dehydrates you, and for proper urinary health you should be drinking lots of water, and also cranberry juice. Your physician was definitely right in telling you that it could have made the bladder infection worse.
Diet Soda and Heart Health. If you drink diet soda and have high blood pressure, you might be at a higher risk for heart problems. For example, individuals who consume diet soda are at a higher risk for myocardial infarction, according to a 2012 article published in the Journal of General Internal Medicine..