Is it harmful to health to drink zero-degree Coca-Cola every day?

Of course it's harmful! First of all, coke zero is too cold and irritating to the stomach. Secondly, drink coke often. Caffeine contained in cola can stimulate myocardial contraction and accelerate heartbeat and breathing. It will stimulate gastric acid secretion and harm the stomach; It has diuretic effect, and the elderly are prone to dehydration; Long-term drinking will be addictive. Once you don't drink it, you will feel uncomfortable, listless or have a headache.