Dear Welcome to HCM We understand your concerns I went through your details. Coffee contains caffeine as you are already aware. Caffeine is a chemical found in coffee, tea, cola, guarana, mate, and other products The caffeine comes under the category of stimulant. Caffeine works by stimulating the central nervous system (CNS), heart, muscles, and the centers that control blood pressure. Coffee is considered harmless if taken moderately. Once or maximum two cups per day is OK. Coffee has some positive effects on body. But raw white sugar does not have any. It is totally harmful. Refined sugar contains no fiber, no minerals, no proteins, no fats, no enzymes, only empty calories. Always better to avoid it. Hope this answers your query. Available for further clarifications. Good luck.