Purines are the larger of the two types of bases found in DNA. Cytosine and thymine are pyrimidines. The deoxyribose sugar of the DNA backbone has 5 carbons and 3 oxygens. The carbon atoms are numbered 1', 2', 3', 4', and 5' to distinguish from the numbering of the atoms of the purine and pyrmidine rings.
Be it a cola, non-cola, diet soda or other sugar-sweetened carbonated beverage, carbonated beverages can increase your risk of serious health issues. Soda, especially colas, contains high levels of phosphoric acid, which is closely linked with the development of kidney stones and other renal problems.
If diet soda causes you to overeat and eat sweets, or if you feel like you react poorly to them, then removing them from your diet is a reasonable thing to do. Substituting club soda with lime or lemon works for many people. For others, a more gradual phasing out of diet soda is a better idea.